Question

28
The standard enthalpies of formation of
C,H,OH(1), CO,(g) and H,O(l) are - 277,
-393.5 and -285.5 kJ mol respectively
Calculate the standard enthalpy change
for the reaction
k]
C,H,OH(1)+30,(8)200,(8)+ 3 H,0(1)
The enthalpy of formation of O, (g) in the
standard state is Zero, by definition​

Answer 1

Answer:

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Answer 2

Answer:

Enthalpy is a state function which means the energy change between two states is independent of the path. Since equation 1 and 2 add to become equation 3, we can say:

ΔH3=ΔH1+ΔH2

Hess's Law says that if equations can be combined to form another equation, the enthalpy of reaction of the resulting equation is the sum of the enthalpies of all the equations that combined to produce it.