How do you know if a reaction absorbed heat or released heat? Some reactions require heat as catalyst. For example: CuO + H2---->(heat above arrow) Cu + H2O, is this reaction exothermic or endothermic?
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How do you know if a reaction absorbed heat or released heat? Some reactions require heat as catalyst. For example: CuO + H2---->(heat above arrow) Cu + H2O, is this reaction exothermic or endothermic?
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Answer:
It is endothermic because there heat is not evolved during reaction
hope it helps,