If heat contents of CH4, C2H4 and C3H8 are -17.9, 12.5 and -24.8 kcal/mole respectively, than ΔH for the reaction CH4(g) + C2H4(g) ⇌ C3H8(g) will be __________ Kcal.
(A) -19.4
(B) -30.2
(C) 55.2
(D) -55.2

1 Answer

Answer :

(A) -19.4

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