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Rupal Ram Gour
Asked: 2022-11-04T05:50:05+05:30 In:

The enthalpy change when 1 L of 1 M `H _(2)SO_(4)` is completely neutralized by 1L of1 M `Ca(OH)_(2)` will be
A. `-13.7 kcal`
B. `-27.4 kcal`
C. `-1.37 kcal`
D. `- 2.74 kcal`

The enthalpy change when 1 L of 1 M `H _(2)SO_(4)` is completely neutralized by 1L of1 M `Ca(OH)_(2)` will be
A. `-13.7 kcal`
B. `-27.4 kcal`
C. `-1.37 kcal`
D. `- 2.74 kcal`
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  1. Correct Answer – b
    1 L of 1 M `H_(2)SO_(4)` gives 2 moles of`H^(+)` ions
    1L of`M Ca9OH)_(2)` gives 2 moles of `OH^(-) ` ions
    Hence, for complete neutralization of 2 molesof `H^(+)` ions by 2 molesof `OH^(-)` ions.
    `DeltaH = 2 ( – 13.7) kcal =- 27.4 kcal`

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