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The synthesis of C3H4 + H2 to form C2H6 has an enthalpy of –136kJ/mol. Is this reaction endothermic or exothermic?
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The synthesis of C3H4 + H2 to form C2H6 has an enthalpy of –136kJ/mol. Is this reaction endothermic or exothermic?

User Pablo Hoffman
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Answer: exothermic

Explanation: The key is to look at the enthalpy (-136kJ/mol). Since it’s negative, the reaction is losing heat, therefore it’s exothermic.

User Dylan Reich
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