For which of the following reactions is the D | vedclass

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(C) The standard enthalpy of formation $(\Delta H_f^o)$ is defined as the enthalpy change when $1 	ext{ mole}$ of a compound is formed from its const

Vedclass · Accepted Answer

$Xe_{(g)} + 2F_{2(g)} \rightarrow XeF_{4(g)}$

Vedclass · Answer

(C) The standard enthalpy of formation $(\Delta H_f^o)$ is defined as the enthalpy change when $1 	ext{ mole}$ of a compound is formed from its constituent elements in their standard states.In option $C$,$Xe_{(g)} + 2F_{2(g)} ightarrow XeF_{4(g)}$,$1 	ext{ mole}$ of $XeF_4$ is formed from its elements $Xe$ and $F_2$ in their standard states.Therefore,for this reaction,$\Delta H_{reaction}^o = \Delta H_f^o(XeF_4)$.In other options,either more than $1 	ext{ mole}$ of product is formed or the reactants are not in their standard elemental states.

For which of the following reactions is the $\Delta H^o$ of the reaction equal to the $\Delta H_f^o$ of the product?

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