At 1 atm pressure, Substance C boils at -36 degree C and Substance D boils at -6

Question

At 1 atm pressure, Substance C boils at -36 degree C and Substance D boils at -65 degree C Which has a higher enthalpy of vaporization? Substance C Substance D Neither, C and D have the same enthalpy of vaporization. It's impossible to know without more information. At 60 degree C, Substance A has a vapor pressure of 129. ton-and Substance B has a vapor pressure of 159. ton. Which has a higher enthalpy of vaporization? Substance A Substance B Neither, A and B have the same enthalpy of vaporization. It's impossible to know without more information. The enthalpy of vaporization of Substance E is smaller than that of Substance F. Which has the higher boiling point? Substance E Substance F Neither, E and F have the same boiling point. It's impossible to know without more information.

Explanation / Answer

Ethalpy of vaporization is increases boiling point is increases.

1. C substance

   C substance has high boiling point and it's high ethalpy of voporization

2. vapour pressure is increases ethalpy of vapourization is increases.

A substance

    C substance has high vapour pressure and it has high ethalpy of vapourization

3. substance F

Ehalpy of vapourization increases boiling point is increases.

substance has high enthalpy and has high boliling point.

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