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Course: Physical Chemistry (Essentials) - Class 11 > Unit 6

Lesson 11: Calculating enthalpy changes for various processes

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Calculating enthalpy changes for various processes

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Consider the following information:

Reaction	$Δ H^{o}$ ‍
$H_{2} O (l) ⟶ H^{+} (aq) + OH^{-} (aq)$ ‍	$57.3 KJ / mol \to (1)$ ‍
$H_{2} (g) + \frac{1}{2} O_{2} (g) \to H_{2} O (l)$ ‍	$- 285.83 KJ / mol \to (2)$ ‍

Calculate the enthalpy of formation of $OH^{-}$ ‍.

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KJ / mol

.