1.

1 mol of `H_(2) SO_(4)` in mixed with 2 mol of `NaIH`. The heat evolved will beA. `57.3 kJ`B. `2 xx 57.3 KJ`C. `57.3//2 kJ`D. cannot be predicted

Answer» Correct Answer - B
During neutralization process,
`H^(+) (aq.) + OH^(-) (aq.) rarr H_(2) O(1)`
`57.3 kJ` energy (heat) is released for energy `1 mol H_(2) O` formation. When `1 mol` of `H_(2) SO_(4)` is mixed with 2 mol of `NaOH`,
we get 2 mol of `H_(2) O`:
`H_(2) SO_(4) + 2 NaOH rarr Na_(2) SO_(4) + 2 H_(2) O`
Thus, the amount of energy released is `2 xx 57.3 kJ`.


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