Calculate H° for the Reaction C₄H₄(g) + 2H₂(g)

question 43

Multiple Choice

Calculate H° for the reaction C₄H₄(g) + 2H₂(g)  C₄H₈(g) , using the following data: H°_combustion for C₄H₄(g) = -2341 kJ/mol
H°_combustion for H₂(g) = -286 kJ/mol
H°_combustion for C₄H₈(g) = -2755 kJ/mol

• A) -128 kJ
• B) 158 kJ
• C) -158 kJ
• D) 128 kJ
• E) none of these

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