1 the vapor pressure of ethanol at 45c is 0227


1. The vapor pressure of ethanol at 45°C is 0.227 atm: 

C2H5OH (l)  C2H5OH (g)

a) Calculate the value of Kp at 45°C.

b) The value of Kp is 0.103 at 45°C; does this mean that ΔH° for this reaction is positive or negative?

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