. Given these reactions: A r 2B ∆H = 40 kJ B r C ∆H = -50 kJ 2C r D ∆H = -20 kJ Calculate ∆H for the reaction; D + A r 4C.
(A) –100 kJ
(B) –60 kJ
(C) –40 kJ
(D) 100 kJ
. Given these reactions: A r 2B ∆H = 40 kJ B r C ∆H = -50 kJ 2C r D ∆H = -20 kJ Calculate ∆H for the reaction; D + A r 4C.
(A) –100 kJ
(B) –60 kJ
(C) –40 kJ
(D) 100 kJ
