1.

If DeltaH_f^@" for " H_2O and H_2O_2 " are " -280 and -188 kJ mol^(-1), the enthalpy change for the reaction, 2 H_2O_2 (l) to 2H_2O (l) + O_2(g) is :

Answer»

`-196 KJ mol^(-1)`
`146 kJ mol^(-1)`
`-494 kJ mol^(-1)`
`-98 kJ mol^(-1)`

Answer :A


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