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The enthalpy change of which reaction corresponds to ∆H˚f for Na2CO3(s) at 298 K? — Thermodynamics Chemistry Question

Question

The enthalpy change of which reaction corresponds to ∆H˚f for Na2CO3(s) at 298 K?

A.

2Na(s) + C(s) + 3/2O2(g) → Na2CO3(s)

✓ Correct
B.

Na2O(s) + CO2(g) → Na2CO3(s)

C.

2Na+(aq) + CO3 2-(aq) → Na2CO3(s)

D.

2Na+(aq) + 2OH–(aq) + CO2(aq) → Na2CO3(s) + H2O

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