Question:medium
The standard enthalpy of formation of H₂O(l) and Fe₂O₃(s) are respectively −286 kJ mol⁻¹ and −824 kJ mol⁻¹. What is the standard enthalpy change for the following reaction?
\[
\text{Fe}_2\text{O}_3(s) + 3\text{H}_2(g) \rightarrow 3\text{H}_2\text{O}(l) + 2\text{Fe}(s)
\]
The standard enthalpy of formation of H₂O(l) and Fe₂O₃(s) are respectively −286 kJ mol⁻¹ and −824 kJ mol⁻¹. What is the standard enthalpy change for the following reaction?
\[
\text{Fe}_2\text{O}_3(s) + 3\text{H}_2(g) \rightarrow 3\text{H}_2\text{O}(l) + 2\text{Fe}(s)
\]Show Hint
Elements in standard state have zero enthalpy of formation.
Updated On: May 2, 2026
- $-538$ kJ mol$^{-1}$
- $+538$ kJ mol$^{-1}$
- $-102$ kJ mol$^{-1}$
- $+34$ kJ mol$^{-1}$
- $-34$ kJ mol$^{-1}$
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The Correct Option is
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