Stoichiometry
The heat of vaporisation __________ with increase in pressure.

Decreases
Increases
Both B and C
Becomes zero at critical pressure

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Stoichiometry
Variation of vapor pressure with temperature can be calculated using Clausius-Clapeyron equation, which assumes that the

Molal latent heat of vaporisation is constant within the limited temperature range
Vapor follows the ideal gas law
Volume in the liquid state is negligible compared with that in the vapor state
All of these

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Stoichiometry
At 100°C, water and methylcyclohexane both have vapour pressures of 1 atm. Also at 100°C, the latent heats of vaporisation of these compounds are 40.63 kJ/mole for water and 31.55 kJ/mole for methylcyclohexane. The vapour pressure of water at 150°C is 4.69 atm. At 150°C, the vapour pressure of methylcyclohexane would be expected to be

Significantly less than 4.69 atm
Nearly equal to 4.69 atm
Significantly more than 4.69 atm
Indeterminate due to lack of data

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