Enthalpy Change

[paperaeroplane]

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In this question from a TPRH passage, they give you two enthalpies of formation.

H(formation)1 = -297 kj/M
H(formation)2 = -297.1 kj/M

They then ask: What is the enthalpy change in the transformation of 1 to 2?

My process to answering was doing: H(formation)2 - H(formation)1. I thought you were supposed to do products - reactants to find the enthalphy change. And the answer I got was -.1 kj/mol.

However, the correct answer was .1 kj/mol and I don't understand why. Anyone understand? Thanks!

 

[zzzcor]

are you sure the question asks the formation from 1 to 2, not 2 to 1?
I also think it should be -.1 because 2 is more stable compound than 1 and transforming from 1 to 2 should release energy.