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CGP EDU Academic Team
Published on: August 14, 2026
The lattice enthalpy and enthalpy of solution in water for solid NaCl are 753 kJ mol –1 and
5 kJ mol –1 respectively (Fig. above). If the solution enthalpies of Na + and Cl – are in the ratio 6 : 5, the enthalpy of hydration of Na + ion is
Text Solution
Verified by ExpertsThe correct answer is:
C
753 + 6x + 5x = 5
x = –68 kJ/mol.
enthalpy of hydration of Na + = 6x = –408 kJ/mol.
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