Use relevant enthalpy changes from the tables to answer this question.


C(s) + 2H2(g) → CH4(g) ΔН/kJ mol^-1-76

CH4(g) + 202(g) --> CO2(g) + 2H2O(g) ΔН/kJ mol^-1 is -890

CH4(9) → C(g) + 4H(g) ΔН/kJ mol^-1 is 1648

3C(s) + 4H2(g) СзН8(g) ΔН/kJ mol^-1 is -105

bond bond enthalpy

Н-Н 436

C-C. 350

C=C 610

C=0 805

Which value can be calculated for the enthalpy change for the following reaction?
2C(g) + 6H(g) → C2H6(g)
Your choices are:
A -2822 kJ mol^-1
B -2122 kJ mol^-1
C -1998 kJ mol^-1
D -1772 kJ mol^-1