| Sections | |||
|---|---|---|---|
| Internal Energy | 22 mins | 0 completed | Learn |
| Calorimetry | 39 mins | 0 completed | Learn |
| Hess's Law | 17 mins | 0 completed | Learn |
| Enthalpy of Formation | 13 mins | 0 completed | Learn Summary |
| End of Chapter 6 Problems | 52 mins | 0 completed | Learn |
| Additional Practice |
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| Units of Energy |
| Endothermic & Exothermic Reactions |
| Additional Guides |
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| Enthalpy |
Solution: A gas-phase reaction was run in an apparatus designed to maintain a constant pressure.
Using data from Appendix C in the textbook, determine H for the formation of one mole of the product.
Problem
A gas-phase reaction was run in an apparatus designed to maintain a constant pressure.
Using data from Appendix C in the textbook, determine H for the formation of one mole of the product.
Practice Problems
Use the information provided to determine ΔH°rxn f...
Choose the thermochemical equation that illustrate...
Given the data in the table below, what is ΔH°rxn ...
Determine the answer for the question below.
Which of
O2 (g), O2 (ℓ), H2 (g), H2 (ℓ), H2O (g),...
Predict the value of ΔHo f is greater than, less t...
Predict the value of ΔHo f is greater than, less t...
2C2H2 + 5 O2 → 4CO2 + 2H2O
Use the given s...
If the combustion of liquid octane, C 8H18, has a ...
Which of the following equations represents a reac...
Urea, CO(NH2)2(s), is an important molecule. Our b...
For which one of the following reactions is ΔH°rxn...
Use the standard enthalpies of formation in the ta...
What is the value of ΔH° for this reaction?
3 H2 ...
Calculate the enthalpy of combustion of ethylene, ...
Use the given heats of formation to calculate the ...
Using the given thermochemical data, what is ΔH° f...
What is the enthalpy change for this reaction?
Hg...
When 10.00 g of phosphorus is burned in O2(g) to f...
The value of ΔH° for the following reaction is -33...
Calculate ΔH°rxn for the following reaction and in...
The value of ∆H0 for which of the following reacti...
Find the standard heat of formation (ΔH f) for but...
What is the standard enthalpy of reaction ΔH orxn ...
Determine the enthalpy of reaction for
4 NH3(g) +...
In the standard enthalpy of formation, ΔH°f , for ...
Given the following:
Which of the following has a non-zero ΔHf°?
a....
The explosive nitroglycerin (C3H5N3O9) decomposes ...
The combustion of ammonia is represented by this e...
Consider 0.0110 moles of HCl consumed in the chemi...
Calculate ΔH for the following reaction using the ...
Calculate ΔH for the reaction C4H4(g) + 2H2(g) → C...
Consider the following reactions:
1. 2Al(s) + 3...
ΔHf° is not zero for which one of the following:
...
The combustion of ammonia is represented by the eq...
Find the ΔH of for propanol, C3H8O(l), given the f...
The thermite reaction, in which powdered aluminum ...
For which of the following reaction(s) is the enth...
Which of the following does not have a standard en...
It is often argued that natural gas (CH4) is prefe...
Calculate the enthalpy change (ΔH°rxn ) for the fo...
Consider the partial oxidation of ethane as shown ...
Acetylene (C2H2) and nitrogen (N2) both contain a ...
The standard enthalpies of formation of gaseous pr...
Acetylene (C2H2) and nitrogen (N2) both contain a ...
The mechanism for the oxidation of HBr by O2 to fo...
What is a standard state?
What is the value of the standard enthalpy of form...
Which is more stable at room temperature, a Cl2 mo...
What is the energy difference between the Cl2 mole...
What is meant by the term standard conditions, wit...
Write the chemical equation for the reaction whose...
A gas-phase reaction was run in an apparatus desig...
Consider the two diagrams below.
Based on (i), w...
Consider the two diagrams below.
Based on (ii), ...
Can you use an approach similar to Hesss law to ca...
The complete combustion of ethanol, C2H5OH (l), to...
Write an equation for the formation of NH3 (g) fro...
Write an equation for the formation of CO2 (g) fro...
Write an equation for the formation of Fe2O3 (s) f...
Write an equation for the formation of CH4 (g) fro...
Write an equation for the formation of one mole of...
Write an equation for the formation one mole of Mg...
Write an equation for the formation one mole of C2...
Write an equation for the formation one mole of CH...
What is meant by the term enthalpy of formation?
Thermodynamic Quantities for Selected Substances a...
What is meant by the term standard enthalpy of fo...
Thermodynamic Quantities for Selected Substances a...
Thermodynamic Quantities for Selected Substances a...
Thermodynamic Quantities for Selected Substances a...
Methanol (CH3OH) can be made by the controlled oxi...
What is the standard enthalpy change for a reactio...
What is the standard enthalpy of formation for a c...
Consider the decomposition of liquid hydrogen pero...
Consider the decomposition of liquid hydrogen pero...
Consider the decomposition of liquid hydrogen pero...
A gas-phase reaction was run in an apparatus desig...
Acetylene (C2H2) and nitrogen (N2) both contain a ...
Use bond enthalpies in the table below to estimate...
Use bond enthalpies in the table below to estimate...
Use bond enthalpies in the table below to estimate...
First launch the video. The video will show you th...
The hydrocarbons acetylene (C2 H2 ) and benzene (C...
Complete combustion of 1 mol of acetone (C3H6 O) l...
Diethyl ether, C4H10O (l), a flammable compound th...
Gasoline is composed primarily of hydrocarbons, in...
Write the formation reaction for sodium perchlorat...
Gasoline is composed primarily of hydrocarbons, in...
Gasoline is composed primarily of hydrocarbons, in...
Naphthalene (C10H8) is a solid aromatic compound o...
Naphthalene (C10H8) is a solid aromatic compound o...
Given the data in the table below, what is ΔH°rxn ...
For a particular isomer of C8H18, the following re...
Methanol (CH3OH) is used as a fuel in race cars. (...
Consider the reaction of N2O5 at 25°C for which th...
The following table lists some enthalpy of formati...
Does ΔHrxn for the reaction represented by the fol...
The enthalpy of combustion of acetylene C 2H2 is d...
Acetone, CH3COCH3, is a liquid solvent. The enthal...
Use the values of ΔHf° in Appendix 4 to calculate ...
The standard enthalpy change for the formation of ...
What is the value of ΔH° for this reaction?C4H4(g)...
How many grams of methane [CH 4(g)] must be combus...
For a particular isomer of C 8H18, the following r...
The Ostwald process for the commercial production ...
The density of ethanol C2H5OH is .7893 g/mL. Find ...
Given the data in the table below, calculate ΔH°rx...
What is the balanced chemical equation for the rea...
A typical frostless refrigerator uses 655 kWh of e...
Use the information in the table to calculate ΔH° ...
Glycine, C2H5O2N. is important for biological ener...
The combustion reaction of ethane (C2H6(g)) is sho...
Enthalpy H is a measure of the energy content of a...
Using the standard enthalpies of formation listed ...
Use a standard enthalpies of formation table to de...
At one time, a common means of forming small quant...
Consider the reaction of N2O5 at 25°C for which th...
At one time, a common means of forming small quant...
Given the standard enthalpies of formation in the ...
What is the balanced chemical equation for the rea...
Use the standard enthalpies of formation in the ta...
For which should the standard heat of formation ΔH...
Use a standard enthalpies of formation table to de...
A city of 100,000 people uses approximately 1.0 x ...
To which one of the following reactions occurring...
Write balanced equations that describe the formati...
Write a balanced reaction for the combustion of e...
Write balanced equations that describe the formati...
Write balanced equations that describe the formati...
Write balanced equations that describe the formati...
Using values from Appendix C, calculate the value ...
Using values from Appendix C, calculate the value ...
Using values from Appendix C, calculate the value ...
Using values from Appendix C, calculate the value ...
Calculate the approximate enthalpy change, ΔH rxn,...
For a particular isomer of C8H18, the following re...
Pentaborane-9, B5H9, will combust when exposed to ...
Complete combustion of 1 mol of acetone (C 3H6O) l...
Determine the enthalpy for this reaction:Al(OH)3(s...
The decomposition of ZnCO3(s) into ZnO(s) and CO2(...
Joseph Priestly prepared oxygen in 1774 by heating...
How many kilojoules of heat will be released when ...
From the molar heats of formation in Appendix G, d...
In a coffee-cup calorimeter, 100.0 mL of 1.0 M NaO...
Kerosene, a common space-heater fuel, is a mixture...
Kerosene, a common space-heater fuel, is a mixture...
The white pigment TiO2 is prepared by the reaction...
Methanol (CH3 OH) has been suggested as a fuel to ...
Methanol (CH3 OH) has been suggested as a fuel to ...
From the data in Table 5.2, determine which of the...
Hydrogen and methanol have both been proposed as a...
Hydrogen and methanol have both been proposed as a...
Among the substances that react with oxygen and th...
How much heat is produced when 1.25 g of chromium ...
Hydrogen and methanol have both been proposed as a...
When 10.00 g of phosphorus is burned in O2(g) to f...
Nitric acid, HNO3, can be prepared by the followin...
How much heat is released when 25.0 g of methane b...
The decomposition of hydrogen peroxide, H 2O2, has...
A typical frostless refrigerator uses 655 kWh of ...
When backpacking in the wilderness, hikers often b...
Some automobiles and buses have been equipped to b...
Consider the following acid-neutralization reactio...
The overall reaction in a commercial heat pack can...
Consider the following balanced thermochemical equ...
Consider the following balanced thermochemical equ...
Ethylene oxide (EO) is prepared by the vapor-phase...
When 1 mol of NO(g) forms from its elements, 90.29...
When 1 mol of KBr(s) decomposes to its elements, 3...
Deterioration of buildings, bridges, and other str...
The overall reaction in a commercial heat pack can...
The overall reaction in a commercial heat pack can...
The overall reaction in a commercial heat pack can...
Consider the combustion of a single molecule of CH...
A mercury mirror forms inside a test tube as a res...
A mercury mirror forms inside a test tube as a res...
Sucrose (C12H22O11, table sugar) is oxidized in th...
The space shuttle carries about 7.30×104 kg of sol...
What is the heat of combustion of ethane, C 2H6, i...
Which of the following substances have an enthalpy...
Ozone, O3(g), is a form of elemental oxygen produc...
Use Table 6.3 to write a balanced formation equati...
Which of the enthalpies of combustion in Table 5.2...
Does the standard enthalpy of formation of H 2O(g)...
Use Table 6.3 to write a balanced formation equati...
Use Table 6.3 to write a balanced formation equati...
Use Table 6.3 to write a balanced formation equati...
Use Table 6.3 to write a balanced formation equati...
Use Table 6.3 to write a balanced formation equati...
Use Table 6.3 to write a balanced formation equati...
Use Table 6.3 to write a balanced formation equati...
Consider the decomposition of liquid hydrogen pero...
Consider the decomposition of liquid hydrogen pero...
Consider the decomposition of liquid hydrogen pero...
Kerosene, a common space-heater fuel, is a mixture...
Stearic acid (C18H36O2) is a fatty acid, a molecul...
Consider the following equations:3A + 6B → 3D Δ...
Write a balanced equation and draw an enthalpy dia...
Write a balanced equation and draw an enthalpy dia...
Write a balanced equation and draw an enthalpy dia...
Write a balanced equation and draw an enthalpy dia...
Write a balanced equation and draw an enthalpy dia...
Write a balanced equation and draw an enthalpy dia...
What is the balanced chemical equation for the rea...
Choose the reaction that represents ΔH°f for Ca(NO...
For which of the following reactions is ΔH∘rxn equ...
When 1 mol of NO(g) forms from its elements, 90.29...
The following scenes represent a gaseous reaction ...
The standard enthalpy of formation for glucose, C6...
When 1 mol of KBr(s) decomposes to its elements, 3...
Give the definition of the standard enthalpy of fo...
Most ethylene (C2H4), the starting material for pr...
Sucrose (C12H22O11, table sugar) is oxidized in th...
For which of the following reactions is ΔH°rxn equ...
If the standard enthalpy of combustion of ethanol ...
The net change during photosynthesis involves CO 2...
Write a balanced chemical equation depicting the f...
Write reactions for which the enthalpy change will...
Write a balanced chemical equation depicting the f...
Write reactions for which the enthalpy change will...
Write a balanced chemical equation depicting the f...
Write a balanced chemical equation depicting the f...
Write reactions for which the enthalpy change will...
Write reactions for which the enthalpy change will...
Write reactions for which the enthalpy change will...
Write reactions for which the enthalpy change will...
Use the ΔH°f and ΔH°rxn information provided to ca...
Using the standard enthalpies of formation, what i...
a. Write a balanced equation for the combustion of...
What is the heat of combustion of ethane, C2H6, in...
Calculate the standard enthalpy change for the rea...
Even though so much energy is required to form a m...
The thermite reaction, in which powdered aluminum ...
Use the values of ΔHf° in Appendix 4 to calculate ...
Ethene (C2H4) can be halogenated by the following ...
Ethene (C2H4) can be halogenated by the following ...
How can you calculate ΔH˚rxn from tabulated standa...
Ethene (C2H4) can be halogenated by the following ...
Use the values of ΔHf° in Appendix 4 to calculate ...
Use the values of ΔHf° in Appendix 4 to calculate ...
H2 reacts with the halogens (X2) according to the ...
Calculate ΔH°rxn for the following:2H2S(g) + 3O2(g...
Calculate ΔH°rxn for the following:CH4(g) + Cl2(g)...
Calculate ΔH°rxn for the following:SiO2(s) + 4HF(g...
Using the data in Appendix G, calculate the standa...
H2 reacts with the halogens (X2) according to the ...
Calculate ΔH°rxn for the following:C2H6(g) + O2(g)...
Copper(I) oxide can be oxidized to copper(II) oxid...
H2 reacts with the halogens (X2) according to the ...
Acetylene burns in air according to the following ...
Using the data in Appendix G, calculate the standa...
Use the values of ΔHf° in Appendix 4 to calculate ...
Using the data in Appendix G, calculate the standa...
Use the values of ΔHf° to calculate ΔH° for the fo...
Using the data in Appendix G, calculate the standa...
In photosynthesis, plants form glucose (C6H12O6) a...
The common lead-acid car battery produces a large ...
When magnesium metal is burned in air, two product...
Stearic acid (C18H36O2) is a fatty acid, a molecul...
Kerosene, a common space-heater fuel, is a mixture...
Using the data in Appendix G, calculate the standa...
Using the data in Appendix G, calculate the standa...
Silicon tetrachloride is produced annually on the ...
Using the data in Appendix G, calculate the standa...
You may want to reference (Pages 191 - 192) Sectio...
Hydrazine (N2H4) is a fuel used by some spacecraft...
Silicon tetrachloride is produced annually on the ...
You may want to reference (Pages 191 - 192) Sectio...
Use standard enthalpies of formation to calculate ...
The reusable booster rockets of the space shuttle ...
You may want to reference (Pages 191 - 192) Sectio...
Use standard enthalpies of formation to calculate ...
Water gas, a mixture of H2 and CO, is an important...
You may want to reference (Pages 186 - 190)Section...
Use standard enthalpies of formation to calculate ...
Use standard enthalpies of formation to calculate ...
Water gas, a mixture of H2 and CO, is an important...
During photosynthesis, plants use energy from sunl...
The standard enthalpy of combustion of ethene gas,...
Ethanol can be made from the fermentation of crops...
Using the data in Appendix G, calculate the standa...
Top fuel dragsters and funny cars burn nitromethan...
The enthalpy of combustion of solid carbon to form...
The explosive nitroglycerin (C3H5N3O9) decomposes ...
In the early days of automobiles, illumination at ...
One of the best-selling light, or low-calorie, bee...
Methanol (CH3OH) has been suggested as a fuel to r...
Calculate ΔH for the reactionN2H4 (l) + O2 (g) → N...
Combustion reactions involve reacting a substance ...
Average Bond Enthalpies (kJ/mol)C-H 413N-H 391O-H ...
Ethanol, C2H5OH, is used as a fuel for motor vehic...
Water gas is produced from the reaction of steam w...
Use standard enthalpies of formation to calculate ...
The oxidation of nitrogen monoxide is favored at 4...
The following reaction can be used to prepare samp...
At 298 K, the standard enthalpies of formation for...
Calculate the standard enthalpy of combustion of s...
The value of the equilibrium constant Kc for the r...
Consider the reaction: 2 H2(g) + O2(g) → 2 H2O(l)....
Calculate ΔH° for each of the following reactions,...
Consider the reaction: H2(g) + I2(s) → 2 HI(g)Use ...
Ethanol, C2H5OH, is used as a fuel for motor vehic...
The following reaction can be used to prepare samp...
Calculate ΔH° for each of the following reactions,...
Electric generating plants transport large amounts...
Burning methane in oxygen can produce three differ...
Ethylene, C2H2, a byproduct from the fractional di...
Under certain nonstandard conditions, oxidation by...
The hydrocarbons acetylene (C2H2) and benzene (C6H...
The following reaction can be used to prepare samp...
Calculate ΔH° for each of the following reactions,...
Ethanol (CH3CH2OH) is being used as a gasoline add...
Ethanol (CH3CH2OH) is being used as a gasoline add...
Calculate ΔH° for each of the following reactions,...
The following reaction can be used to prepare samp...
The ΔHf˚ of TiI3(s) is –328 kJ/mol and the ΔH˚ for...
Propane, C3H8, is a hydrocarbon that is commonly u...
Use the values of H˚f in Appendix 4 to calculate H...
Consider the following unbalanced oxidation-reduct...
Consider the following unbalanced oxidation-reduct...
Calculate the enthalpy of combustion of propane, C...
Consider the following acid-neutralization reactio...
Consider the following acid-neutralization reactio...
Estimate ΔH for the atomization of benzene, C6H6: ...
Calculate the enthalpy of combustion of butane, C ...
The metathesis reaction between AgNO3 (aq) and NaC...
The metathesis reaction between AgNO3 (aq) and NaC...
The metathesis reaction between AgNO3 (aq) and NaC...
The metathesis reaction between AgNO3 (aq) and NaC...
Consider the following balanced thermochemical equ...
In winemaking, the sugars in grapes undergo fermen...
Consider the following equilibrium between oxides ...
The methane molecule, CH4, has the geometry shown ...
In winemaking, the sugars in grapes undergo fermen...
The methane molecule, CH4, has the geometry shown ...
The table below shows the average bond energies fo...
Methanol (CH3OH) can be made by the reaction of CO...
Three of the reactions that occur when the paraffi...
Consider the following balanced thermochemical equ...
Ethylene oxide (EO) is prepared by the vapor-phase...
Use standard enthalpies of formation to determine ...
Meals-ready-to-eat (MREs) are military meals that ...
Methanol burns in oxygen to form carbon dioxide an...
Dry ice is solid carbon dioxide. Instead of meltin...
The ΔH for the oxidation of sulfur in the gas phas...
Gasoline is composed primarily of hydrocarbons, in...
Thermodynamic Quantities for Selected Substances a...
Thermodynamic Quantities for Selected Substances a...
Thermodynamic Quantities for Selected Substances a...
The stratospheric ozone (O3) layer helps to protec...
Thermodynamic Quantities for Selected Substances a...
The following is known as the thermite reaction: 2...
Using values from Appendix C in the textbook, calc...
Using values from Appendix C in the textbook, calc...
Using values from Appendix C in the textbook, calc...
Using values from Appendix C in the textbook, calc...
For H2O2(g), find the value of Hf. (Use Appendix C...
For CaCO3(s), find the value of Hf. (Use Appendix ...
For POCl3(l), find the value of Hf. (Use Appendix ...
For C2H5OH(l), find the value of Hf. (Use Appendix...
You may want to reference (Pages 187 - 190) Sectio...
You may want to reference (Pages 187 - 190) Sectio...
You may want to reference (Pages 187 - 190) Sectio...
You may want to reference (Pages 187 - 190) Sectio...
Pentane (C5H12) is a component of gasoline that bu...
Use standard enthalpies of formation to calculate ...
Use standard enthalpies of formation to calculate ...Consider the following balanced reaction: 2A 2 + B...
For which of the following reactions is ΔH ∘rxn eq...For a particular isomer of C8H18, the following re...Calculate ΔH°rxn for the combustion of C2H4(g) fro...Use average bond energies to estimate ΔH° for the ...Consider the following reaction between hydrogen s...
Consider the following reaction. 2Fe2O3 → 4Fe + 3O...For the following reaction 2H2S (g) + 3O2 (g) → 2H...Enthalpy H is a measure of the energy content of a...What is the change in enthalpy at 25°C and 1 atm f...
Using values from Appendix C in the textbook, calc...A scientist measures the standard enthalpy change ...The value of ΔH°rxn for the reaction below is - 10...From the standard enthalpies of formation, calcula...Methyl tert-butyl ether (MTBE, C 5H12O, a gasoline...Using the standard enthalpies of formation, what i...What is the standard enthalpy of formation of CH3C...Using the standard enthalpies of formation, what i...
Calculate the standard enthalpy change for the fol...Using standard heats of formation, calculate the s...What is ΔH° for the following reaction? 2CH3OH (l...Use the average bond energies listed in the textbo...Using standard heats of formation, calculate the s...Consider the following balanced reaction: 2A2 + B ...Consider the following generic reaction: 2A + 3B →...Calculate the standard enthalpy change for the fol...Data: ΔHf values: CH4 (g), -74.8 kJ: CO2 (g), -393...
Determine the enthalpy for this reaction:Ca(OH)2(s...Calculate ΔH°f (in kilojoules per mole) for benze...What is the heat of combustion of ethane, C 2H6, i...Be sure to answer all parts.Calculate the heats of...Using standard heats of formation, calculate the s...When one mole of gasecus ethanol, C2H5OH, reacts w...
Using the standard enthalpies of formation, what i...Calculate the standard enthalpy change for the fol...Use the following data to calculate the standard h...Part AThe value of ΔH° for the following reaction ...
Part A Calculate the standard enthalpy change for ...Be sure to answer all parts.Stearic acid (C18H36O2...When solutions containing silver ions and chloride...Sulfur dioxide, SO2(g), can react with oxygen to p...Be sure to answer all parts.Three of the reactions...
How many kilojoules of heat will be released when ...
Palmitic acid (C16H32O2) is a dietary fat found in...
The explosive nitroglycerin (C3H5N3O9) decomposes ...
Which of the following substances have a standard ...
Calculate the enthalpy of reaction (in kJ) for 5.6...