Choose the reaction(s) from the following options, for which the...

Choose the reaction(s) from the following options, for which the standard enthalpy of reaction is equal to the standard enthalpy of formation.

Options

A $\dfrac{3}{2}{O}_{2}\left(g\right) \to {O}_{3}\left(g\right)$
B $\dfrac{1}{8}{S}_{8}\left(s\right) + {O}_{2}\left(g\right) \to S{O}_{2}\left(g\right)$
C $2{H}_{2}\left(g\right) + {O}_{2}\left(g\right) \to 2{H}_{2}O\left(l\right)$
D $2C\left(g\right) + 3{H}_{2}\left(g\right) \to {C}_{2}{H}_{6}\left(g\right)$

Correct answer

A. $\dfrac{3}{2}{O}_{2}\left(g\right) \to {O}_{3}\left(g\right)$

Step-by-step solution

Standard enthalpy formation of a compound is the amount of enthalpy charge involved when one mole of a compound is formed from the reactants present in their elementary form,

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