1.Heat of combustion ΔH∘\Delta H^\circΔH∘ for C(s)C(s)C(s), H2(g)H_2(g)H2(g) and CH4(g)CH_4(g)CH4(g) are −94-94−94, −68-68−68 and −213-213−213 kcal mol−1^{-1}−1 respectively. Then ΔH∘\Delta H^\circΔH∘ for C(s)+2H2(g)→CH4(g)C(s) + 2H_2(g) \to CH_4(g)C(s)+2H2(g)→CH4(g) is:a.−17-17−17 kcalb.−111-111−111 kcalc.−170-170−170 kcald.−85-85−85 kcalLogin to continueOnly logged in users canattempt or see the solution.
