Understanding Hess' Law: C2H4 + H2O -> C2H5OH

[terryds]

Homework Statement

Homework Equations

Hess' Law

The Attempt at a Solution

C2H4 (g) + H2O (g) -> C2H5OH (g) ΔH = - 46 kJ
C2H5OH(g) -> C2H5OH(l) ΔH = - 43 kJI think the ΔH is - 46 - 43 = - 89

However, the book says that the answer is A. +3 kJ
How come that be?

 

[Chestermiller]

It can't be, that's how. Your answer is right.