Chemistry · 2025
JEE Main · 7 April 2025, Shift 2 · Q53
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…
The hydration energies of $\displaystyle \mathrm{K}^{+}$and $\displaystyle \mathrm{Cl}^{-}$are $\displaystyle -x$ and $\displaystyle -y \mathrm{~kJ} / \mathrm{mol}$ respectively. If lattice energy of KCl is $\displaystyle -z \mathrm{~kJ} / \mathrm{mol}$, then the heat of solution of KCl is :
Official answer
From NTA’s final answer key for this paper.
(4)
$\displaystyle z-(x+y)$
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JEE Main 2025 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.