What is the approximate enthalpy of neutralisation of a strong acid by a strong base in dilute solution?
Correct answer D. −57.3 kJ mol⁻¹
Explanation
For strong acids and bases the reaction is essentially H⁺ + OH⁻ → H₂O in every case, so the enthalpy of neutralisation is nearly constant at about −57.3 kJ mol⁻¹.
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