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Chemistry - Thermochemistry Question with Solution | TestHub

ChemistryThermochemistryEnthalpy of solution/dilution/hydrationEasy2 minPYQ_2025

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The hydration energies of $K^{+}$ and $Cl^{-}$ are -x and -y $kJ / mol$ respectively. If lattice energy of KCl is -z $kJ / mol$ , then the heat of solution of KCl is :

Question diagram: The hydration energies of K + and Cl − are -x and -y kJ / mo

Options:

Answer:

C

Solution:

$Δ H_{Sol^{n} .} = L \cdot E \cdot + (H \cdot E)_{K_{(g)}^{+}} + (HE)_{Cl_{(g)}^{- 1}} = Z - x - y = z - (x + y)$

Stream:JEESubject:ChemistryTopic:ThermochemistrySubtopic:Enthalpy of solution/dilution/hydration

⏱ 2mℹ️ Source: PYQ_2025

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