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Chemistry As level energetics watch

1. Guys I need help ASAP , I'm getting +76.5 for this question but the actual answer is -76.5 . Would really appreciate any help
2. This is my working:
-60.4 + x = 52.3 + (-36.2)
X=52.3 + (-36.2) + 60.4
= +76.5
3. You have to do poducts-reactants since the enthalpy of formation is given. (you only do reactants - products when combustion data is given)

Sum of the reactants= -36.2+52.3= + 16.1
so -60.4- 16.1= -76.5 kJ mol^-1

4. (Original post by Luj99)

Guys I need help ASAP , I'm getting +76.5 for this question but the actual answer is -76.5 . Would really appreciate any help
There is just a sign difference. You must have the order wrong.

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5. My order is correct guys
6. (Original post by Kvothe the arcane)
There is just a sign difference. You must have the order wrong.

I did exactly how you Did it , then I did 52.3+(-36.2)+60.4=+76.5
7. (Original post by Luj99)
I did exactly how you Did it , then I did 52.3+(-36.2)+60.4=+76.5
The two routes are going to be equal to each other due to Hess' law which states that the change of enthalpy in a chemical reaction (i.e. the heat of reaction at constant pressure) is independent of the pathway between the initial and final states.

So

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