Question

Calculate the heat of combustion of ethene
CH2 = CH2(g) + 3o2(g)+ 2h20(l)
The bond energy data are given below
C=C = 619 kJ mol-1
C-H = 414 kJ mol-1
O=0 = 499 kJ mol-1
C=0 = 724 kJ mol-1
0-H = 460 kJ mol-1​

Answer 1

Answer:

-964 KJ/mol

Explanation:

by using formula :∆r°H=€∆products°H-€∆reactants°H

[∆f C2H4 + 3∆f O2]-[2∆f CO2 +2∆f H2O]

[2275+1497]-[2896+1840]

3772-4736

-964