Question

Using average bond enthalpies (linked above), estimate the enthalpy change for the following reaction: 2CO(g) + 2NO(g)2CO2(g) + N2(g) kJ Bond Bond Energy (kJ/mol) C=C 602 H-H 436 C-H 413 C-C 346

Using average bond enthalpies (linked above), estimate the enthalpy change for the following reaction: I2(g) + Cl2(g)2ICl(g) kJ

Using the values of bond energy from the table above, estimate the enthalpy change for the following reaction: C2H4(g) + H2(g) C2H6(g) kJ

Answer 1

C2H4 (9) + caH619) H219) Enthalpy change = ? Bond Energy c=c H-H 602 kJ/mol 436 kJ/mol 413 KJ/mol 346 kJ/mol C-H c-c H it -H tc- # c=c t H-H H ta It N change Bond of realtants 4 preolust. Enthalpy Energy Bond {BE(C=C) + 4B:ECC-H) +BECH-1) BE E(C-C) + 6B:E (C-H)] (6x2 + 4(413)+(363-8 +6 +6C43) = 2690 - 2824 = -136 kJ/mol ( B. CS Scanned with CamScanner