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What is the heat of reaction for 2H2 + O2 -> 2H2O, if heat of formation of H2, O2, and H2O are 2 J, 5 J, and 10 J respectively?(a) 2 J(b) 5 J(c) 8 J(d) 11 J |
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Answer» The correct choice is (d) 11 J Explanation: Heat of reaction = 2*10 – 2*2 – 5 = 11 J. |
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