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Hess' Law

What is Δ H...

Question

What is $Δ H^{o}$ for complete neutralization of strong diacidic base $A (O H)_{2}$ by $H N O_{3}$ ?

-55.84 kJ

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-111.68 kJ

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55.84 kJ/mol

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None of these

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Solution

The correct option is B -111.68 kJ
$Δ H^{o} = 2 \times Δ H_{n e u t r a l i z a t i o n}^{o} = 2 (- 55.84) = - 111.68 K J$

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