The Born-Haber cycle for {\KCl} is evaluated with the following data : \\Delta_{\f} \H^\circ for {\KCl}=-436.7 {\kJ} {\mol}^{-1} \\Delta_{{\sub }} \H^\circ for {\K}=89.2 {\kJ} {\mol}^{-1}, \\Delta_{{\ionisation }} \H^\circ for {\K}=419.0 {\kJ} {\mol}^{-1}; \\Delta_{{\electron \gain }} \H^{\⋃} for \Cl(g)=-348.6 {\kJ} {\mol}^{-1}, \\Delta_{{\bond }} {\H}^\circ for {\Cl}_{2}=243.0 {\kJ} {\mol}^{-1} The magnitude of lattice enthalpy of {\KCl} in {\kJ} {\mol}^{-1} is . (Nearest integer) [26 Aug 2021 Shift 1]

JEE Main 26-Aug-2021 Shift 1 Solved Paper

Section: Chemistry

Question : 58 of 90

Marks: +1, -0

The Born-Haber cycle for KCl is evaluated with the following data :
ΔfH° for KCl=−436.7‌kJ‌mol−1
ΔsubH° for K=89.2‌kJ‌mol−1,
ΔionisationH° for K=419.0‌kJ‌mol−1;
Δelectron‌gainH⋃ for Cl(g)=−348.6‌kJ‌mol−1,
ΔbondH° for Cl2=243.0‌kJ‌mol−1
The magnitude of lattice enthalpy of KCl in kJ
mol−1 is . (Nearest integer)

[26 Aug 2021 Shift 1]

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