Answer to Question #141187 in Inorganic Chemistry for Christine

Question #141187
3. Given the following thermochemical equations,
C2H2(g) + 5/2 O2(g) → 2CO2(g) + H2O(l) ∆H = -1299.5 KJ
C(s) + O2(g) → CO2(g) ∆H = -393.5 KJ
H2(g) + ½ O2(g) → H2O(l) ∆H = -285.8 KJ
Calculate ∆H for the decomposition of one mole of acetylene, C2H2(g), to its elements in their stable state at 25oC and 1 atm.
1
Expert's answer
2020-10-30T06:43:26-0400

From the equations given;

The equation for the end reaction is;

For the reaction is therefore


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