Chemistry · 2020
JEE Main · 5 September 2020, Shift 2 · Q42
Lattice enthalpy and enthalpy of solution of NaCl are 788 kJ mol^-1 and 4 kJ mol^-1, respectively. The hydration enthalpy of NaCl is:
Lattice enthalpy and enthalpy of solution of NaCl are $\displaystyle 788 \mathrm{~kJ} \mathrm{~mol}^{-1}$ and $\displaystyle 4 \mathrm{~kJ} \mathrm{~mol}^{-1}$, respectively. The hydration enthalpy of NaCl is :
Official answer
(4)
$\displaystyle -784 \mathrm{~kJ} \mathrm{~mol}^{-1}$
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JEE Main 2020 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.