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31 solutions

Clausius-Clapeyron Equation

Q. Consider the thermal decomposition of CaCO3: CaCO3(s) ⇌ CaO(s) + CO2(g) The equilibrium vapor pressures of CO2 are 22.6 mmHg at 700°C and 1829 mmHg at 950°C. Calculate the standard enthalpy of the reaction.

Solved • Nov 22, 2019

Clausius-Clapeyron Equation

Q. A linear relationship exists between the natural logarithm of the vapor pressure of a gas and the reciprocal of its temperature (in kelvin). What is the slope of the line?

Solved • Nov 22, 2019

Clausius-Clapeyron Equation

Q. Ethanol has an enthalpy of vaporization of 42.3 kJ/mol. The compound has a vapor pressure of 1.00 atm at 78.3 °C. At what temperature is the vapor pressure equal to 0.800 atm? (R = 8.314 J/K⋅mol)

Solved • Nov 21, 2019

Clausius-Clapeyron Equation

Q. A sealed glass jar has a small amount of water on the bottom. The rest of the volume in the jar is taken up by helium gas at a partial pressure of 526 mmHg, and water vapor. If the total pressure inside the jar is 760. mmHg, what is the temperature of the water? Express the temperature numerically in degrees Celcius.

Solved • Oct 28, 2019

Clausius-Clapeyron Equation

Q. You are in a mountain range with atmospheric air pressure of 520 mmHg, and you wish to boil some eggs. What is the approximate boiling point of the water at this air pressure? Express the temperature in degrees Celsius using two significant figures.

Solved • Oct 28, 2019

Clausius-Clapeyron Equation

Q. 7. For the vaporization of ethanol (CH3CH2OH) at 25oC CH3CH2OH(l) → CH3CH2OH(g) ∆Hof(kJ mol-1)-277.63-235.1∆Gof(kJ mol-1)-174.8-168.6 c) What is the vapor pressure at 400 K?

Solved • Sep 20, 2019

Clausius-Clapeyron Equation

Q. 15. The enthalpy of vaporization for a substance is 14.2 kJ mol^-1. The vapor pressure was found to be 88.5 mmHg at 201.2 K.What is the vapor pressure (in mmHg) at 301.2 K?

Solved • Sep 20, 2019