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InterviewSolution
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The absolute enthalpy of neutralization of the reaction, `MgO(s)+2HCl(aq.)+H_(2)O(l)` will beA. less than `- 57.33 kJ mol^(-1)`B. `- 57.33 kJ mol^(-1)`C. greater than `- 57.33 kJ mol^(-1)`D. `57.33 kJ mol^(-1)` |
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Answer» Correct Answer - C Note that in the reactions 1 mol of `H_(2) O` is formed according to the reaction `O^(2-) + 2H^(+) rarr H_(2)O` Since `O^(2-)` dinegative, its interaction with `H^(+)` releases relatively more energy. Thus, the absoulte enthalpy of neutralization of `MgO` by `HCl` is greater than `- 57.33 kJ mol^(-1)` |
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