QuestionThermochemistry / enthalpy of solution
What will be the enthalpy change when one mole of HCl (g) is dissolved in a large amount of water at room temperature for the following change in state?
HCl (g) + aq → H⁺ (aq) + Cl⁻ (aq)
[where Δ_fH° (HCl, g) = −92·3 kJ mol⁻¹; Δ_fH°(Cl⁻, aq) = −167·2 kJ mol⁻¹]
- (a) −74·9 kJ mol⁻¹
- (b) −259·5 kJ mol⁻¹
- (c) +74·9 kJ mol⁻¹
- (d) +259·5 kJ mol⁻¹
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