Which of the following chemical equations corresponds to the standard molar enthalpy of formation of Na_2CO_3(s)? a. 2 NA(s) + C(s) + 3 O(g) > Na_2CO_3(s)
b. Na_2O(s) + CO_2(g) >Na_2CO_3 (s)
c. Na_2(s) + C(s) + 3 O(g) > Na_2CO_3 (s)
d. Na_2O(s) + CO(g) > Na_2CO_3(s)
e. 2 Na(s)+ C(s) + 3/2 O_2(g) > Na_2CO_3(s)

2 Na(s) + C(s) + 3/2 O₂(g) → Na₂CO₃(s)

Explanation:

The molar enthalpy of formation of a chemical is defined as the change in enthalpy during the formation of 1 mole of the substance from its constituent elements (Constituent elements are pure elements you have in the periodic table)

For Na₂CO₃ constituent elements are Na(s), C(s) and O₂(g) and the chemical equation that represents the molar enthalpy is:

anaphase.

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