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Equal volumes of 1.00 M HSO4–(aq) and 1.00 M SO42–(aq) are mixed. The pH of this solution varies witThermodynamics Chemistry Question

Question

Equal volumes of 1.00 M HSO4–(aq) and 1.00 M SO42–(aq) are mixed. The pH of this solution varies with the reciprocal of the absolute temperature as shown.

What is the standard enthalpy change for the acid dissociation of HSO4–(aq)?
HSO4–(aq) ® H+(aq) + SO42-(aq) ∆H°rxn = ???

A.

–24.0 kJ mol-1

✓ Correct
B.

–10.4 kJ mol-1

C.

10.4 kJ mol-1

D.

24.0 kJ mol-1

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