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Question

Change in enthalpy for the reaction, 2H2O2(l)2H2O(l)+O2(g), if heat of formation of H2O2(l) and H2O(l) are 188 and 286kJ/mol respectively is:

A
196kJ/mol
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B
+196kJ/mol
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C
+948kJ/mol
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D
948kJ/mol
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