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Gibbs Free Energy & Spontaneity

In the reacti...

Question

In the reaction
$A^{+} + B ⟶ A + B^{+}$ ,
there is no entropy change. If enthalpy change is $22 k J$ of $A^{+}$ , calculate $Δ G$ for the reaction.

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Solution

For the given reaction
$Δ H = 22 k J, Δ S = 0$
$Δ G = Δ H - T Δ S$
$Δ G = 22 - T \times 0 = 22 k J {m o l}^{- 1}$

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