Using the data provided, calculate the multiple bond energy (kJ mol−1) of a C≡C bond in C2H2. Given that the heat of formation of C2H2=225 kJ mol−1. (take the bond energy of C−H bond as 350 kJ mol−1 ):
2C(s)→2C(g) △H=1410 kJ mol−1
H2(g)→2H(g) △H=330 kJ mol−1