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MHT CET202312 May 2023Morning ShiftChemistryThermodynamics (C)Actual

If lattice enthalpy and hydration enthalpy of KCl are 699 ~kJ ~mol ⁻¹ and -681.8 ~kJ ~mol ⁻¹ respectively. What is the enthalpy of solution of KCl ?

Options

  1. A8.20 ~kJ ~mol ⁻¹
  2. B10.25 ~kJ ~mol ⁻¹
  3. C13.80 ~kJ ~mol ⁻¹
  4. D17.20 ~kJ ~mol ⁻¹

Correct answer

D. 17.20 ~kJ ~mol ⁻¹

Step-by-step solution

aligned _ soln H & = _ L H + _ hyd H & =+699 ~kJ ~mol ⁻¹+ (-681.8 ~kJ ~mol ⁻¹ ) & =17.2 ~kJ ~mol ⁻¹ aligned

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