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Clausius-Clapeyron Equation Solutions Library

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83 solutions

Clausius-Clapeyron Equation

Q. Which solids will melt under applied pressure? Check all that apply.Based on these data,Solid            Triple point                    Normal mel...

Solved • Mar 20, 2020

Clausius-Clapeyron Equation

Q. The molar enthalpy of vaporization (∆H) of water is 40.7 kJ/mol. What is the vapor pressure of water at 40.°C (R=8.314J/K mol)?A) 11.5 torrB) 311 t...

Solved • Feb 4, 2020

Clausius-Clapeyron Equation

Q. Butane (C4H10) has a heat of vaporization of 22.44 kJ/mol and a normal boiling point of -0.40°C. A 300. mL sealed flask contains 0.620g of butane a...

Solved • Jan 23, 2020

Clausius-Clapeyron Equation

Q. Given the data below for cyclohexane,Predict the normal boiling point of cyclohexane in °C.

Solved • Nov 4, 2019

Clausius-Clapeyron Equation

Q. Given the data below for cyclohexane,Calculate ΔHvap using all of this data. (For purposes of partial credit only, explain how you arrived at this ...

Solved • Nov 4, 2019

Clausius-Clapeyron Equation

Q. If ΔHvap for water is 40.7 kJ/mole, calculate Pvap of water at 37°C.(a) 6.90 torr(b) 12.4 torr(c) 18.7 torr(d) 25.4 torr(e) 52.6 torr

Solved • Nov 1, 2019

Clausius-Clapeyron Equation

Q. 1. Consider the following two substances and their vapor pressures at 298 K.Substance Vapor Pressure (mmHg)A 275B 459Based on this information comp...

Solved • Jul 10, 2019

Clausius-Clapeyron Equation

Q. The following table gives the vapor pressure of hexafluorobenzene (C6 F6 ) as a function of temperature: Temperature (K ) Vapor Pressure (torr)280....

Solved • Nov 27, 2018

Clausius-Clapeyron Equation

Q. Suppose the vapor pressure of a substance is measured at two different temperatures.By using the Clausius-Clapeyron equation, large{ln P = -frac {D...

Solved • Nov 27, 2018

Clausius-Clapeyron Equation

Q. Methylamine has a vapor pressure of 344 torr at -25oC and a boiling point of -6.4oC . Find ΔHvap for methylamine.

Solved • Nov 27, 2018

Clausius-Clapeyron Equation

Q. Carbon disulfide has a vapor pressure of 363 torr at 25 °C and a normal boiling point of 46.3 °C. Find ΔHvap for carbon disulfide.

Solved • Nov 27, 2018

Clausius-Clapeyron Equation

Q. The vapor pressure for pure water and pure acetone is measured as a function of temperature. In each case, a graph of the log of the vapor pressure...

Solved • Nov 27, 2018

Clausius-Clapeyron Equation

Q. Propane has a normal boiling point of -42.0oC and a heat of vaporization (Hvap) of 19.04 kJ/mol. What is the vapor pressure of propane at 30.0 oC?

Solved • Nov 27, 2018

Clausius-Clapeyron Equation

Q. The vapor pressure of carbon tetrachloride is measured as a function of temperature and the results are tabulated and shown in the table below. Det...

Solved • Nov 27, 2018

Clausius-Clapeyron Equation

Q. Benzene has a heat of vaporization of 30.72 kJ/mol and a normal boiling point of 80.1 oC. At what temperature does benzene boil when the external p...

Solved • Nov 27, 2018

Clausius-Clapeyron Equation

Q. The vapor pressure of a substance is measured over a range of temperatures. A plot of the natural log of the vapor pressure versus the inverse of t...

Solved • Nov 27, 2018

Clausius-Clapeyron Equation

Q. Acetic acid has a normal boiling point of 118 oC and a ΔHvap of 23.4 kJ/mol. What is the vapor pressure (in mmHg) of acetic acid at 30 oC?

Solved • Nov 27, 2018

Clausius-Clapeyron Equation

Q. Butane (C4H10) has a heat of vaporization of 22.44 kJ/mol and a normal boiling point of -0.4 oC. A 250 mL sealed flask contains 0.65 g of butane at...

Solved • Nov 27, 2018

Clausius-Clapeyron Equation

Q. Butane (C4H10) has a heat of vaporization of 22.44 kJ/mol and a normal boiling point of -0.4 oC. A 250 mL sealed flask contains 0.65 g of butane at...

Solved • Nov 27, 2018

Clausius-Clapeyron Equation

Q. The vapor pressure of ammonia at several different temperatures is shown below. Temperature (K)  Pressure (torr)20065.3210134.3220255.7230456.02355...

Solved • Nov 27, 2018

Clausius-Clapeyron Equation

Q. A syringe at a temperature of 20 °C is filled with liquid ether in such a way that there is no space for any vapor. If the temperature is kept cons...

Solved • Oct 30, 2018

Clausius-Clapeyron Equation

Q. Carbon tetrachloride, CCl4, was once used as a dry cleaning solvent, but is no longer used because it is carcinogenic. At 57.8 °C, the vapor pressu...

Solved • Oct 30, 2018

Clausius-Clapeyron Equation

Q. The ΔH°f of gaseous dimethyl ether (CH3OCH3) is −185.4 kJ/mol; the vapor pressure is 1.00 atm at −23.7°C and 0.526 atm at −37.8°C. (b) Calculate ΔH...

Solved • Oct 29, 2018

Clausius-Clapeyron Equation

Q. The ΔH°f of gaseous dimethyl ether (CH3OCH3) is −185.4 kJ/mol; the vapor pressure is 1.00 atm at −23.7°C and 0.526 atm at −37.8°C. (a) Calculate ΔH...

Solved • Oct 29, 2018

Clausius-Clapeyron Equation

Q. Mercury (Hg) vapor is toxic and readily absorbed from the lungs. At 20.°C, mercury (ΔHvap = 59.1 kJ/mol) has a vapor pressure of 1.20 x 10−3 torr, ...

Solved • Oct 29, 2018

Clausius-Clapeyron Equation

Q. Methyl salicylate, C8H8O3, the odorous constituent of oil of wintergreen, has a vapor pressure of 1.00 torr at 54.3°C and 10.0 torr at 95.3°C. What...

Solved • Oct 29, 2018

Clausius-Clapeyron Equation

Q. Butane is a common fuel used in cigarette lighters and camping stoves. Normally supplied in metal containers under pressure, the fuel exists as a m...

Solved • Oct 29, 2018

Clausius-Clapeyron Equation

Q. Methane (CH4) has a boiling point of −164°C at 1 atm and a vapor pressure of 42.8 atm at −100°C. What is the heat of vaporization of CH4?

Solved • Oct 29, 2018

Clausius-Clapeyron Equation

Q. What is the ΔH°vap of a liquid that has a vapor pressure of 621 torr at 85.2°C and a boiling point of 95.6°C at 1 atm?

Solved • Oct 29, 2018

Clausius-Clapeyron Equation

Q. Diethyl ether has a ΔH°vap of 29.1 kJ/mol and a vapor pressure of 0.703 atm at 25.0°C. What is its vapor pressure at 95.0°C?

Solved • Oct 29, 2018

Clausius-Clapeyron Equation

Q. A liquid has a ΔH°vap of 35.5 kJ/mol and a boiling point of 122°C at 1.00 atm. What is its vapor pressure at 113°C?

Solved • Oct 29, 2018

Clausius-Clapeyron Equation

Q. The enthalpy of vaporization for acetone is 32.0 kJ/mol. The normal boiling point for acetone is 56.5 ˚C. What is the vapor pressure of acetone at ...

Solved • Oct 18, 2018

Clausius-Clapeyron Equation

Q. Carbon tetrachloride, CCl 4, has a vapor pressure of 213 torr at 40. ˚C and 836 torr at 80. ˚C. What is the normal boiling point of CCl4?

Solved • Oct 18, 2018

Clausius-Clapeyron Equation

Q. The temperature inside a pressure cooker is 115 ˚C. Calculate the vapor pressure of water inside the pressure cooker. What would be the temperature...

Solved • Oct 18, 2018

Clausius-Clapeyron Equation

Q. In Breckenridge, Colorado, the typical atmospheric pressure is 520. torr. What is the boiling point of water (ΔHvap = 40.7 kJ/mol) in Breckenridge?

Solved • Oct 18, 2018

Clausius-Clapeyron Equation

Q. From the following data for liquid nitric acid, determine its heat of vaporization and normal boiling point.

Solved • Oct 18, 2018

Clausius-Clapeyron Equation

Q. Plot the following data and determine ΔH vap for magnesium and lithium. In which metal is the bonding stronger?

Solved • Oct 18, 2018

Clausius-Clapeyron Equation

Q. Enter your answer in the provided box. The vapor pressure of ethanol is 100 mmHg at 34.9°C. What is its vapor pressure at 64.5°C? (ΔHvap for ethano...

Solved • Oct 5, 2018

Clausius-Clapeyron Equation

Q. n-octane, C8H18 boils at 125.7 °C. What is its molar heat of vaporization in kilojoules per mole if its vapor pressure at 20°C is 11 torr?

Solved • Sep 24, 2018

Clausius-Clapeyron Equation

Q. From the following vapor pressure data for acetone, an estimate of the molar heat of vaporization of CH3COCH3 is _______ kJ/mol.

Solved • Sep 18, 2018

Clausius-Clapeyron Equation

Q. The vapor pressure of liquid silver is 400 mm Hg at 2.33 x 103 K. Assuming that its molar heat of vaporization is constant at 275 kJ/mol, the vapor...

Solved • Sep 18, 2018

Clausius-Clapeyron Equation

Q. The vapor pressure of a liquid doubles when the temperature is raised from 71°C to 8.0 x 101°C. At what temperature will the vapor pressure be five...

Solved • Sep 7, 2018

Clausius-Clapeyron Equation

Q. The vapor pressure of ethanol is 1.00 x 102 mmHg at 34.90°C. What is its vapor pressure at 64.07°C? (ΔHvap for ethanol is 39.3 kJ/mol.)

Solved • Sep 7, 2018

Clausius-Clapeyron Equation

Q. Part AThe vapor pressure of a substance is measured over a range of temperatures. A plot of the natural log of the vapor pressure versus the invers...

Solved • Aug 30, 2018

Clausius-Clapeyron Equation

Q. The vapor pressure of liquid aluminum is 400 mm Hg at 2.59 x 103 K. Assuming that its molar heat of vaporization is constant at 252 kJ/mol, the vap...

Solved • Aug 29, 2018

Clausius-Clapeyron Equation

Q. Enter your answer in the provided box.The vapor pressure of ethanol is 1.00 x 102 mmHg at 34.90 °C. What is its vapor pressure at 56.17 °C? (ΔHvap ...

Solved • Jul 31, 2018

Clausius-Clapeyron Equation

Q. A certain liquid has a vapor pressure of 92.0 Torr at 23.0°C and 290.0 Torr at 45.0°C. Calculate the value of ΔH°vap for this liquid. 

Solved • Jul 25, 2018

Clausius-Clapeyron Equation

Q. For a substance with a molar enthalpy of vaporization of 83 kJ/mol, how much must the temperature be lowered from 600 K to decrease the vapor press...

Solved • Jul 24, 2018

Clausius-Clapeyron Equation

Q. A certain liquid has a vapor pressure of 92.0 Torr at 23.0°C and 203.0 Torr at 45.0°C. Calculate the value of ΔH°vap for this liquid. Calculate the...

Solved • Jul 16, 2018

Clausius-Clapeyron Equation

Q. A certain substance has a heat of vaporization of 43.09 kJ/mol. At what Kelvin temperature will the vapor pressure be 3.00 times higher than it was...

Solved • Jul 3, 2018

Clausius-Clapeyron Equation

Q. Enter your answer in the provided box. What is the ΔH°vap of a liquid that has a vapor pressure of 615 torr at 79.8 °C and a boiling point of 96.0 ...

Solved • Jun 25, 2018

Clausius-Clapeyron Equation

Q. Enter your answer in the provided box. Assistance Diethyl ether has a  ΔH vap of 29.1 kJ/mol and a vapor pressure of 0.703 atm at 25.0°C. What is i...

Solved • Jun 25, 2018

Clausius-Clapeyron Equation

Q. The vapor pressure of dichloromethane, CH 2C2, at 0°C is 134 g. The normal boiling point of dichloromethane is 40°C. Calculate its molar heat of va...

Solved • Jun 25, 2018

Clausius-Clapeyron Equation

Q. Enter your answer in the provided box.What is the ΔH°vap of a liquid that has a vapor pressure of 622 torr at 79.0°C and a boiling point of 99.8°C ...

Solved • Jun 25, 2018

Clausius-Clapeyron Equation

Q. A certain substance has a heat of vaporization of 53.47 kJ/mol. At what Kelvin temperature will the vapor pressure be 6.50 times higher than it was...

Solved • Jun 19, 2018

Clausius-Clapeyron Equation

Q. A certain liquid has a vapor pressure of 92.0 Torr at 23.0°C and 372.0 Torr at 45.0°C.Calculate the value of ΔH°vap for this liquid. Calculate the ...

Solved • Jun 19, 2018

Clausius-Clapeyron Equation

Q. A certain substance has a heat of vaporization of 37.11 kJ/mol. At what Kelvin temperature will the vapor pressure be 4.50 times higher than it was...

Solved • Jun 5, 2018

Clausius-Clapeyron Equation

Q. Enter your answer in the provided box. What is the ΔH° vap of a liquid that has a vapor pressure of 607 torr at 86.5 °C and a boiling point of 93.3...

Solved • May 30, 2018

Clausius-Clapeyron Equation

Q. A boiled egg can be cooked at 100.0°C in exactly 5 minutes. At an altitude of around 2000m where the boiling point of water is 93.0°C, it takes exa...

Solved • May 27, 2018

Clausius-Clapeyron Equation

Q. A certain liquid has a vapor pressure of 92.0 Torr at 23.0°C and 332.0 Torr at 45.0° C. Calculate the value of ΔH°vap for this liquid in kJ/mol.Cal...

Solved • May 21, 2018

Clausius-Clapeyron Equation

Q. The formation of methanol is important to the processing of new fuels.At 298.0 K, Kp = 2.25x104 for the reactionCO(g) + 2 H2(g) ⇌ CH3OH(l) If ΔH°rx...

Solved • May 12, 2018

Clausius-Clapeyron Equation

Q. The following equation represents the decomposition of a generic diatomic element in its standard state.1/2 X2(g) → X(g)Assume that the standard mo...

Solved • May 4, 2018

Clausius-Clapeyron Equation

Q. A reaction has an equilibrium constant of 8.9x103 at 298 K. At 751 K, the equilibrium constant is 0.43. Find Δ Hrxn for the reaction.

Solved • Mar 30, 2018

Clausius-Clapeyron Equation

Q. A certain substance has a heat of vaporization of 47.70 kJ/mol. At what kelvin temperature will the vapor pressure be 3.50 times higher than it was...

Solved • Mar 20, 2018

Clausius-Clapeyron Equation

Q. The vapor pressure of ammonia at several different temperatures is shown below.a. Use the date to determine the heat of vaporization of ammoniab. D...

Solved • Mar 13, 2018

Clausius-Clapeyron Equation

Q. Ethanol has a heat of vaporization of 38.56 kJ/mol and a normal boiling point of 78.4 C.What is the vapor pressure of ethanol at 15°C?

Solved • Feb 20, 2018

Clausius-Clapeyron Equation

Q. Ethanol has a heat of vaporization of 38.56 kJ/mol and a normal boiling point of 78.4 °C. What is the vapor pressure of ethanol at 14°C?

Solved • Feb 19, 2018

Clausius-Clapeyron Equation

Q. Four alcohols have the formula C4H9OH:1-butanol, 2-butanol (or sec-butanol), isobutanol (or 2-methyl-1-propanol), and tert-butanol (or 2-methy;-2-p...

Solved • Feb 16, 2018

Clausius-Clapeyron Equation

Q. 1) The vapor pressure of dichloromethane, CH 2Cl2, at 0°C is 134 mmHg. The normal boiling point of dichloromethane is 40°C. Calculate its molar hea...

Solved • Dec 14, 2017

Clausius-Clapeyron Equation

Q. Which solids will melt under applied pressure? Check all that apply.

Solved • Sep 22, 2017

Clausius-Clapeyron Equation

Q. What is the vapor pressure (in atm) of a liquid at its normal boiling point? ___________________

Solved • Dec 14, 2016

Clausius-Clapeyron Equation

Q. For the decomposition of ammonia to nitrogen and hydrogen, the equilibrium constant is 1.47 x 10-6 at 298 K. Calculate the temperature at which K =...

Solved • Aug 17, 2016

Clausius-Clapeyron Equation

Q. An unknown liquid has a vapor pressure of 88 mmHg at 45 ◦C and 39 mmHg at 25◦C. What is its heat of vaporization?1. 32 kJ/mol 2. 2000 J/mol3. 32000...

Solved • Jul 28, 2016

Clausius-Clapeyron Equation

Q. The normal boiling point of bromine is 58.8°C. Given that the vapor pressure of bromine is 75.0 torr at 2.5°C, calculate the molar enthalpy of vapo...

Solved • Apr 29, 2016

Clausius-Clapeyron Equation

Q. The vapor pressure of benzene, C6H6, is 40.1 mmHg at 1.6 °C. What is its vapor pressure at 60.6 °C? The molar heat of vaporization of benzene is 31...

Solved • Apr 19, 2016

Clausius-Clapeyron Equation

Q. At room temperature, a sample of some compound has a vapor pressure of 454 torr. At what temperature will the solution have a vapor pressure of 900...

Solved • Mar 16, 2016

Clausius-Clapeyron Equation

Q. How many of the following would be associated with an increase in the rate of vaporization? • An increase in temperature • An increase in the str...

Solved • Feb 19, 2016

Clausius-Clapeyron Equation

Q. Calculate the vapor pressure (mmHg) of potassium at 150°C. The normal boiling point of potassium is 775°C. The heat of vaporization is 81.3 kJ/mol ...

Solved • Feb 19, 2016

Clausius-Clapeyron Equation

Q. Mercury is a neurotoxic metal with a reasonable high vapor pressure, at least for a metal. The vapor pressure at 25°C is 0.0017 mmHg. But what abou...

Solved • Feb 19, 2016

Clausius-Clapeyron Equation

Q. It was determined that the normal boiling point of a compound was 183.5°C. When the boiling point was measured at 300 mmHg, it was a 136.8°C. What ...

Solved • Feb 19, 2016

Clausius-Clapeyron Equation

Q. Which compound has the lowest boiling point?

Solved • Feb 19, 2016

Clausius-Clapeyron Equation

Q. How much energy is required to vaporize 98.6 g of ethanol (C2H5OH) at its boiling point, if its ΔHvap is 40.5 kJ/mol?   A) 86.7 kJ B) 11.5 kJ C...

Solved • Feb 2, 2016

Clausius-Clapeyron Equation

Q. Which of the following is NOT true about the Clausius-Clapeyron equation?   A) It is a way to measure the heat of vaporization in the laboratory ...

Solved • Feb 2, 2016