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Question

Chemistry Question on Thermodynamics

Lattice enthalpy for NaCl is +788 kJ mol-1 and ΔH°hyd= -784 kJ mol-1. Enthaply of solution of NaCl is

A

+572 kJ mol-1

B

+4 kJ mol-1

C

-572 kJ mol-1

D

-4 kJ mol-1

Answer

+4 kJ mol-1

Explanation

Solution

The correct answer is (B) : +4 kJ mol-1.