Question

What is the enthalpy change of 30°C system if the heat capacity of air at 38°C is 5 J/°C and heat capacity of water vapor at 38°C is 10 J/°C, enthalpy of vaporization is 10 J, and the humidity is 60%?

a.

14 J

b.

39 J

c.

65 J

d.

94 J

Answer: (d).94 J

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Q. What is the enthalpy change of 30°C system if the heat capacity of air at 38°C is 5 J/°C and heat capacity of water vapor at 38°C is 10 J/°C, enthalpy of vaporization is 10 J, and...

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