STANDARDPhysics-Thermodynamics
STANDARD Physics Lattice Enthalpy MCQ Question
Type: MCQ-numerical-Medium-Class 11
The enthalpy of solution of sodium chloride is 4 kJ mol⁻¹ and its enthalpy of hydration of ions is 784 kJ mol⁻¹. What will be the lattice enthalpy of sodium chloride?
A
+780 kJ mol⁻¹
B
+394 kJ mol⁻¹
C
+398 kJ mol⁻¹
D
+788 kJ mol⁻¹
Correct Answer
Option D
Detailed Explanation
The lattice enthalpy is calculated as the sum of the enthalpy of solution and the enthalpy of hydration, which gives +788 kJ mol⁻¹.
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