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Standard molar enthalpy of formation of ...

Standard molar enthalpy of formation of `CO_(2)` is equal to

A

Zero.

B

The standard molar enthalpy of combustion of gaseous carbon.

C

The sum of standard molar enthalpies of formation of` CO_(2) and O_(2)`

D

The standard molar enthalpy of combustion of carbon (graphite).

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The correct Answer is:
D

Standard mole enthalpy of formation of `CO _(2)` and the standard molar enthalpy of combustion of carbon (graphite) refer to the same charmical equation C (graphite) `+ O _(2) (g) to CO _(2) (g)`
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