### Self-Test 8.9B

Posted:

**Sun Jan 10, 2016 7:52 pm**The same heater was used to heat a 23-g sample of ethanol, C2H5OH,

to its boiling point. It was found that 22 kJ was required to vaporize all the ethanol.

What is the enthalpy of vaporization of ethanol at its boiling point?

I don't know how to apply delta Hvap= H(vapor)- H(liquid) to solve this problem, or if this formula is the right one to use. How do I solve for the enthalpy of vaporization?

to its boiling point. It was found that 22 kJ was required to vaporize all the ethanol.

What is the enthalpy of vaporization of ethanol at its boiling point?

I don't know how to apply delta Hvap= H(vapor)- H(liquid) to solve this problem, or if this formula is the right one to use. How do I solve for the enthalpy of vaporization?