Question

Integral enthalpy of solution of KCl, when 1 mole of it is dissolved in 20 mole water is +15.90kJ. When 1 mole of it is dissolved in 200 mole water, deltaH is 15.58 kJ. Calculate enthalpy of hydration or dilution. please solve it step by step

Answer 1

Correct question:

Integral enthalpy of solution of KCI, when 1 mole of it is dissolved in 20 mole water is +15.90 kJ. When 1 mole of it is dissolved in 200 mole water. ΔH is 18.58 kJ. Calculate enthalpy of hydration or dilution.

Answer:

The change in enthalpy of hydration or dilution is 2.68 kJ.

Explanation:

The enthalpy of hydration or dilution is change in enthalpy when a solution containing 1 mole of solute is diluted from one concentration to other.

The change in enthalpy of hydration or dilution is given as:

ΔH enthalpy = 18.58 - 15.90

∴ ΔH enthalpy = 2.68 kJ