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Constant-Volume Calorimetry Solutions Library

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95 solutions

Constant-Volume Calorimetry

Q. A calorimeter is used to measure the enthalpy of a reaction. Label the system and the surroundings.

Solved • Oct 19, 2020

Constant-Volume Calorimetry

Q. Which part of the coffee cup calorimeter system could have more heat leaks?A. Where the stirrer join the coffee cupB. Where the thermometer join th...

Solved • Oct 19, 2020

Constant-Volume Calorimetry

Q. Consider the reactionC12H22O11(s) + 12 O2(g) → 12 CO2(g) + 11 H2O(l)in which 10.0 g of sucrose, C12H22O11, was burned in a bomb calorimeter with a ...

Solved • Jul 2, 2020

Constant-Volume Calorimetry

Q. The combustion of exactly 1.000 g of benzoic acid in a bomb calorimeter releases 26.38 kJ of heat. If the combustion of 0.550 g of benzoic acid cau...

Solved • Jun 30, 2020

Constant-Volume Calorimetry

Q. One tablespoon of peanut butter has a mass of m. It is combusted in a calorimeter whose heat capacity is C. The temperature of the calorimeter rise...

Solved • Jun 25, 2020

Constant-Volume Calorimetry

Q. Which fuel contributes least to global warming per kJ of heat produced?(a) octane(b) propane(c) methane

Solved • Jun 25, 2020

Constant-Volume Calorimetry

Q. A researcher studying the nutritional value of a new candy places a 5.80-gram sample of the candy inside a bomb calorimeter and combusts it in exce...

Solved • Apr 9, 2020

Constant-Volume Calorimetry

Q. When 2.060 g of titanium (molar mass = 47.87 g mol−1) is combusted in a bomb calorimeter, the temperature of the calorimeter increases from 25.00°C...

Solved • Nov 29, 2019

Constant-Volume Calorimetry

Q. When 0.455 g of anthracene, C14H10 (molar mass = 178.23 g/mol) is combusted in a bomb calorimeter that has a water jacket containing 500.0 g of wat...

Solved • Oct 25, 2019

Constant-Volume Calorimetry

Q. A calorimeter has 1 kg of water (heat capacity of H2O = 4.184 J/g°C) and its heat capacity is 0.10 kJ/°C when it’s empty. The calorimeter increases...

Solved • Oct 9, 2019

Constant-Volume Calorimetry

Q. When 0.550 g of C14H10 (molar mass = 178.22 g mol –1 ) is combusted in a bomb calorimeter that has a water jacket containing 400. g of water, the t...

Solved • Oct 4, 2019

Constant-Volume Calorimetry

Q. You may want to reference (Pages 265 - 266) Section 6.5 while completing this problem.The combustion of toluene has a ΔErxnDelta {{E}_{{ m{{ m rxn}...

Solved • Nov 12, 2018

Constant-Volume Calorimetry

Q. When 1.551 g of liquid hexane (C6H14) undergoes combustion in a bomb calorimeter, the temperature rises from 25.76 oC to 38.51 oC. Find ∆Erxn for t...

Solved • Nov 12, 2018

Constant-Volume Calorimetry

Q. When 0.515 g of biphenyl (C12H10) undergoes combustion in a bomb calorimeter, the temperature rises from 25.9°C to 30.0°C. Find ΔErxn for the combu...

Solved • Nov 12, 2018

Constant-Volume Calorimetry

Q. Mothballs are composed primarily of the hydrocarbon naphthalene (C10H8). When 1.025 g of naphthalene is burned in a bomb calorimeter, the temperatu...

Solved • Nov 12, 2018

Constant-Volume Calorimetry

Q. When a 3.80-g sample of liquid octane (C8H18) is burned in a bomb calorimeter, the temperature of the calorimeter rises by 27.1 °C. The heat capaci...

Solved • Nov 12, 2018

Constant-Volume Calorimetry

Q. The same reaction, with exactly the same amount of reactant, is conducted in a bomb calorimeter and in a coffee-cup calorimeter. In one of the calo...

Solved • Nov 12, 2018

Constant-Volume Calorimetry

Q. The heat of combustion of liquid octane (C8H18) to carbon dioxide and liquid water at 298 K is -1303 kJ/mol. Find ΔE for this reaction.

Solved • Nov 12, 2018

Constant-Volume Calorimetry

Q. Find ΔH for the combustion of ethanol (C2H6O) to carbon dioxide and liquid water from the following data. The heat capacity of the bomb calorimeter...

Solved • Nov 12, 2018

Constant-Volume Calorimetry

Q. When 10.00 g of phosphorus is burned in O2(g) to form P4O10(s), enough heat is generated to raise the temperature of 2960 g of water from 18.0˚C to...

Solved • Nov 12, 2018

Constant-Volume Calorimetry

Q. Palmitic acid (C16 H32 O2 ) is a dietary fat found in beef and butter. The caloric content of palmitic acid is typical of fats in general. Write a ...

Solved • Nov 12, 2018

Constant-Volume Calorimetry

Q. Palmitic acid (C16H32O2) is a dietary fat found in beef and butter. The caloric content of palmitic acid is typical of fats in general. Write a bal...

Solved • Nov 12, 2018

Constant-Volume Calorimetry

Q. One tablespoon of peanut butter has a mass of 17 g . It is combusted in a calorimeter whose heat capacity is 130 kJ/oC . The temperature of the cal...

Solved • Nov 12, 2018

Constant-Volume Calorimetry

Q. Exactly 1.5 g of a fuel is burned under conditions of constant pressure and then again under conditions of constant volume. In measurement A the re...

Solved • Nov 12, 2018

Constant-Volume Calorimetry

Q. In order to obtain the largest possible amount of heat from a chemical reaction in which there is a large increase in the number of moles of gas, s...

Solved • Nov 12, 2018

Constant-Volume Calorimetry

Q. Exactly 1.5 g of a fuel is burned under conditions of constant pressure and then again under conditions of constant volume. In measurement A the re...

Solved • Nov 12, 2018

Constant-Volume Calorimetry

Q. What is calorimetry?

Solved • Nov 12, 2018

Constant-Volume Calorimetry

Q. Explain the difference between a coffee-cup calorimeter and a bomb calorimeter.

Solved • Nov 12, 2018

Constant-Volume Calorimetry

Q. What is each designed to measure?• coffee-cup calorimeter• bomb calorimeter

Solved • Nov 12, 2018

Constant-Volume Calorimetry

Q. The "Chemistry Put to Work" box on pipelines in Section 10.5 in the textbook mentions that the total deliverability of natural gas (methane, CH4) t...

Solved • Oct 31, 2018

Constant-Volume Calorimetry

Q. Natural gas is very abundant in many Middle Eastern oil fields. However, the costs of shipping the gas to markets in other parts of the world are h...

Solved • Oct 31, 2018

Constant-Volume Calorimetry

Q. The heat of combustion of fructose, C6 H12 O6, is -2812 kJ/mol.If a fresh golden delicious apple weighing 4.26 oz (121 g ) contains 17.0 g of fruct...

Solved • Oct 31, 2018

Constant-Volume Calorimetry

Q. The heat of combustion of ethanol, C2 H5 OH(l), is -1367 kJ/mol. A batch of sauvignon blanc wine contains 11.6 % ethanol by mass.Assuming the densi...

Solved • Oct 31, 2018

Constant-Volume Calorimetry

Q. When a 0.240-g sample of benzoic acid is combusted in a bomb calorimeter, the temperature rises 1.643 oC . When a 0.270-g sample of caffeine, C8H10...

Solved • Oct 31, 2018

Constant-Volume Calorimetry

Q. Assuming that there is an uncertainty of 0.002 oC in each temperature reading and that the masses of samples are measured to 0.001 g, what is the e...

Solved • Oct 31, 2018

Constant-Volume Calorimetry

Q. The automobile fuel called E85 consists of 85% ethanol and 15% gasoline. E85 can be used in so-called flex-fuel vehicles (FFVs), which can use gaso...

Solved • Oct 31, 2018

Constant-Volume Calorimetry

Q. The automobile fuel called E85 consists of 85% ethanol and 15% gasoline. E85 can be used in so-called flex-fuel vehicles (FFVs), which can use gaso...

Solved • Oct 31, 2018

Constant-Volume Calorimetry

Q. From the following data for three prospective fuels, calculate which could provide the most energy per unit volume:Fuel Density at 20oC (g/cm3) Mol...

Solved • Oct 31, 2018

Constant-Volume Calorimetry

Q. What is meant by the term  fuel value?

Solved • Oct 31, 2018

Constant-Volume Calorimetry

Q. Methanol (CH3OH) is used as a fuel in race cars.You may want to reference (Pages 187 - 190) Section 5.7 while completing this problem.Write a balan...

Solved • Oct 31, 2018

Constant-Volume Calorimetry

Q. Bomb calorimeter.Why is a stirrer used in calorimeters?

Solved • Oct 31, 2018

Constant-Volume Calorimetry

Q. A 2.250 -g sample of quinone (C6 H4 O2 ) is burned in a bomb calorimeter whose total heat capacity is 7.854kJ/oC. The temperature of the calorimete...

Solved • Oct 31, 2018

Constant-Volume Calorimetry

Q. A 2.250 -g sample of quinone (C6 H4 O2 ) is burned in a bomb calorimeter whose total heat capacity is 7.854kJ/oC. The temperature of the calorimete...

Solved • Oct 31, 2018

Constant-Volume Calorimetry

Q. A 1.800-g sample of solid phenol (C6H5OH(s)) was burned in a bomb calorimeter, which has a total heat capacity of 11.66 kJ/oC. The temperature of t...

Solved • Oct 31, 2018

Constant-Volume Calorimetry

Q. A 1.800-g sample of solid phenol (C6H5OH(s)) was burned in a bomb calorimeter, which has a total heat capacity of 11.66 kJ/oC. The temperature of t...

Solved • Oct 31, 2018

Constant-Volume Calorimetry

Q. Under constant-volume conditions the heat of combustion of glucose (C6H12O6) is 15.57 kJ/g. A 3.550 -g sample of glucose is burned in a bomb calori...

Solved • Oct 31, 2018

Constant-Volume Calorimetry

Q. Under constant-volume conditions the heat of combustion of glucose (C6H12O6) is 15.57 kJ/g. A 3.550 -g sample of glucose is burned in a bomb calori...

Solved • Oct 31, 2018

Constant-Volume Calorimetry

Q. Under constant-volume conditions the heat of combustion of benzoic acid (C6H5COOH) is 26.38 kJ/g. A 2.760 -g sample of benzoic acid is burned in a ...

Solved • Oct 31, 2018

Constant-Volume Calorimetry

Q. Under constant-volume conditions the heat of combustion of benzoic acid (C6H5COOH) is 26.38 kJ/g. A 2.760 -g sample of benzoic acid is burned in a ...

Solved • Oct 31, 2018

Constant-Volume Calorimetry

Q. Under constant-volume conditions the heat of combustion of benzoic acid (C6H5COOH) is 26.38 kJ/g. A 2.760 -g sample of benzoic acid is burned in a ...

Solved • Oct 31, 2018

Constant-Volume Calorimetry

Q. A 3.67-g peanut is burned in a bomb calorimeter containing 1,223 g of water. The temperature of the water increases from 22.01°C to 29.77°C. Calcul...

Solved • Oct 23, 2018

Constant-Volume Calorimetry

Q. Quinone is an important type of molecule that is involved in photosynthesis. The transport of electrons mediated by quinone in certain enzymes allo...

Solved • Oct 19, 2018

Constant-Volume Calorimetry

Q. If a student performs an endothermic reaction in a calorimeter, how does the calculated value of ΔH differ from the actual value if the heat exchan...

Solved • Oct 18, 2018

Constant-Volume Calorimetry

Q. The combustion of 0.1584 g benzoic acid increases the temperature of a bomb calorimeter by 2.54°C. Calculate the heat capacity of this calorimeter....

Solved • Oct 18, 2018

Constant-Volume Calorimetry

Q. The heat capacity of a bomb calorimeter was determined by burning 6.79 g methane (energy of combustion = -802 kJ/mol CH4) in the bomb. The temperat...

Solved • Oct 18, 2018

Constant-Volume Calorimetry

Q. A sample of 0.562 g of carbon is burned in oxygen in a bomb calorimeter, producing carbon dioxide. Assume both the reactants and products are under...

Solved • Oct 16, 2018

Constant-Volume Calorimetry

Q. Which is the least expensive source of energy in kilojoules per dollar: a box of breakfast cereal that weighs 32 ounces and costs $4.23, or a liter...

Solved • Oct 16, 2018

Constant-Volume Calorimetry

Q. When a 0.740 g sample of trinitrotoluene (TNT), C 7H5N2O6, is burned in a bomb calorimeter, the temperature increases from 23.4°C to 26.9°C. The he...

Solved • Oct 16, 2018

Constant-Volume Calorimetry

Q. When 1.0 g of fructose, C6H12O6(s), a sugar commonly found in fruits, is burned in oxygen in a bomb calorimeter, the temperature of the calorimeter...

Solved • Oct 16, 2018

Constant-Volume Calorimetry

Q. The temperature of the cooling water as it leaves the hot engine of an automobile is 240°F. After it passes through the radiator it has a temperatu...

Solved • Oct 16, 2018

Constant-Volume Calorimetry

Q. A chemical engineer burned 1.520 g of a hydrocarbon in the bomb of a calorimeter (see Figure 6.10). The water temperature rose from 20.00°C to 23.5...

Solved • Oct 15, 2018

Constant-Volume Calorimetry

Q. When a 2.150-g sample of glucose, C6H12O6, is burned in a bomb calorimeter with a heat capacity of 6.317 kJ/K, the temperature of the calorimeter i...

Solved • Oct 15, 2018

Constant-Volume Calorimetry

Q. Calculate the enthalpy of methanol (CH3OH(l) (MW = 32.0 g/mol), if a 2.885 g sample of methanol is burned in a bomb calorimeter (Kc = 727.1 J/°C) c...

Solved • Oct 1, 2018

Constant-Volume Calorimetry

Q. Suppose you had a bomb calorimeter containing 500 mL of water at 25°C that you wanted to heat to exactly 95°C. You are using as a fuel the saturate...

Solved • Sep 26, 2018

Constant-Volume Calorimetry

Q. Consider the following reaction: NaCl (s) → Na+ (aq) + Cl- (aq)         ΔH = 3.88 kJ/mol In a coffee-cup calorimeter you dissolve 21.9 g of this sa...

Solved • Aug 28, 2018

Constant-Volume Calorimetry

Q. Be sure to answer all parts.A 0.1775-g sample of solid magnesium is burned in a constant-volume bomb calorimeter that has a heat capacity of 3024 J...

Solved • Aug 9, 2018

Constant-Volume Calorimetry

Q. If the heat of combustion for a specific compound is -1040.0 kJ/mol and its molar mass is 73.87 g/mol, how many grams of this compound must you bur...

Solved • Aug 7, 2018

Constant-Volume Calorimetry

Q. The propane fuel (C3H8) used in gas barbeques buns according to the following thermochemical equation: C3H8 (g) + 5O2 (g) → 3CO2 (g) + 4H2O (g)    ...

Solved • Jul 31, 2018

Constant-Volume Calorimetry

Q. If the heat of combustion for a specific compound is -1010.0 kJ/mol and its molar mass is 34.13 g/mol, how many grams of this compound must you bur...

Solved • Jul 25, 2018

Constant-Volume Calorimetry

Q. The complete combustion of 0. 731g of a snack bar in a calorimeter (C cal = 6.15 kJ/°C) raises the temperature of the calorimeter by 1.47°C. Calcul...

Solved • Jul 4, 2018

Constant-Volume Calorimetry

Q. A researcher studying the nutritional value of a new candy places a 4.60-gram sample the candy inside a bomb calorimeter and combusts it in excess ...

Solved • Jul 4, 2018

Constant-Volume Calorimetry

Q. A pure sample of pure (E)-2, 5-dimethyl-3-hexene (C 8H16) is combusted in a bomb calorimeter. If the combustion of 0.871 g of (E)-2, 5-dimethyl-3-h...

Solved • Jun 26, 2018

Constant-Volume Calorimetry

Q. When a 6.50 g sample of solid sodium hydroxide dissolves in 100.0 g of water in a coffee-cup calorimeter (the following Figure), the temperature ri...

Solved • May 30, 2018

Constant-Volume Calorimetry

Q. Calculate the heat capacity of a calorimeter if the combustion of 5.000 g of benzoic acid led to a temperature increase of 16.573°C. The heat of co...

Solved • May 27, 2018

Constant-Volume Calorimetry

Q. When a 2.331-g sample of a new organic material was combusted in a bomb calorimeter, the temperature of the calorimeter (and its contents) increase...

Solved • May 20, 2018

Constant-Volume Calorimetry

Q. If the heat of combustion for a specific compound is -1180.0 kJ/mol and its molar mass is 94.65 g/mol how many grams of this compound must you burn...

Solved • Mar 13, 2018

Constant-Volume Calorimetry

Q. Sucrose (table sugar) has the formula C12H22O11 (molar mass = 342.30 g/mol) and a food value of 6.49 kJ/g. Determine the calorimeter constant of th...

Solved • Dec 14, 2017

Constant-Volume Calorimetry

Q. When 1.550 g of liquid hexane (C6H14) undergoes combustion in a bomb calorimeter, the temperature rises from 25.87 to 38.13 °C. Find the ∆Erxn in k...

Solved • Jul 3, 2017

Constant-Volume Calorimetry

Q. The combustion of toluene has a ∆Erxn of –3.91 x 103 kJ/mol. When 1.55 g of toluene (C7H8) undergoes combustion in a bomb calorimeter, the temperat...

Solved • Jul 3, 2017

Constant-Volume Calorimetry

Q. NOTE: YOUR ANSWER SHOULD BE IN KJ/MolWhen 0.535 g of compound X is burned completely in a bomb calorimeter containing 3000 g of water, a temperatur...

Solved • Jun 22, 2017

Constant-Volume Calorimetry

Q. The heat of combustion of butane (C4H10) is −2878 kJ/mol. Assume a typical cigarette lighter holds about 1.75 g of butane. How much heat energy wou...

Solved • Jan 17, 2017

Constant-Volume Calorimetry

Q. Calculate the mass of water that can be vaporized with 155 kJ of heat at 100 °C? (Molar Mass of Water= 18.02 g/mol, ΔHvap = 40.7 kJ/mol) a. 12.5 gb...

Solved • Sep 23, 2016

Constant-Volume Calorimetry

Q. A 2.200-g sample of quinone (C6H4O2) is burned in a bomb calorimeter whose total heat capacity is 7.854 kJ/°C. The temperature of the calorimeter i...

Solved • Jul 13, 2016

Constant-Volume Calorimetry

Q. A 1.00 g sample of NH 4NO3 is decomposed in a bomb calorimeter. The temperature increases by 6.12°C. What is the molar heat of decomposition for am...

Solved • May 9, 2016

Constant-Volume Calorimetry

Q. A student mixes 100 mL of 0.50 M NaOH with 100 mL 0f 0.50 M HCl in a Styrofoam® cup and observes a temperature increase of ΔT1. When she repeats th...

Solved • Apr 26, 2016

Constant-Volume Calorimetry

Q. In a bomb calorimeter, reactions are carried out at: (A) constant pressure  (B) constant volume (C) 1 atm pressure and 25°C (D) 1 atm pressure ...

Solved • Apr 26, 2016

Constant-Volume Calorimetry

Q. How much energy is required to vaporize 22.7 g of dichloromethane (CH 2Cl2) at its boiling point, if its ΔHvap is 31.6 kJ/mol? The molar mass of di...

Solved • Apr 6, 2016

Constant-Volume Calorimetry

Q. Two aqueous solutions are both at room temperature and are then mixed in a coffee cup calorimeter. The reaction causes the teperature of the result...

Solved • Mar 16, 2016

Constant-Volume Calorimetry

Q. A 0.3423 g sample of pentane, C5H12, was burned in a bomb calorimeter. The temperature of the calorimeter and the 1.000 kg of water contained there...

Solved • Feb 12, 2016

Constant-Volume Calorimetry

Q. Consider the following reaction: C12H22O11 (s) + 12 O2 (g)      →       13 CO 2 (aq) + 11 H2O (l)  in which 25.0 g of sucrose, C12H22O11 , was burn...

Solved • Feb 12, 2016

Constant-Volume Calorimetry

Q. The same reaction in a bomb and coffee-cup calorimeter: a. will give the same value of Hrxn because it is the same reaction. b. will give the sam...

Solved • Feb 12, 2016

Constant-Volume Calorimetry

Q. A sample of 1.67 grams of compound Y is burned completely in a bomb calorimeter which contains 2500 g of water. The temperature rises from 24.273ºC...

Solved • Feb 12, 2016

Constant-Volume Calorimetry

Q. In constant-volume calorimetry, what is FALSE?a. There is no work performed.b. The total energy is measured by the change in pressure.c. The total ...

Solved • Feb 12, 2016

Constant-Volume Calorimetry

Q. The two aqueous solutions are not at room temperature and are then mixed in a coffee cup calorimeter. The reaction causes the temperature of the re...

Solved • Feb 12, 2016

Constant-Volume Calorimetry

Q. In a calorimetry experiment a student determines the enthalpy for the reaction of magnesium with hydrochloric acid to be -430 kJ/mol. The true enth...

Solved • Feb 4, 2016