1.

Using the data provided, calculate the multiple bond energy (kJ mol−1) of a C≡C bond in C2H2. That energy is (take the bond energy of a C−H bond as 350 kJ mol−12C(s) + H2(g)→C2H2(g) ΔH=225 kJ mol−12C(s)→2C(g) ΔH=1410 kJ mol−1H2(g)→2H(g) ΔH=330 kJ mol−1

Answer»

Using the data provided, calculate the multiple bond energy (kJ mol−1) of a C≡C bond in C2H2. That energy is (take the bond energy of a C−H bond as 350 kJ mol−1



2C(s) + H2(g)→C2H2(g) ΔH=225 kJ mol−1

2C(s)→2C(g) ΔH=1410 kJ mol−1

H2(g)→2H(g) ΔH=330 kJ mol−1


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