Verified Solution • 2025–26 Session moderate

QAIPMT-2010-Ch-1935: NEET 2010 Chemistry - Class 11 AIPMT-2010-Ch-1935 Solution: The following two reactions are known \(Fe_2O_3(s)+3CO(g)…

The following two reactions are known

Fe_2O_3(s)+3CO(g)\rightarrow 2Fe(s)+3CO_2(g);\ \Delta H=-26.8\ \text{kJ}

and

FeO(s)+CO(g)\rightarrow Fe(s)+CO_2(g);\ \Delta H=-16.5\ \text{kJ}

. The value of

\Delta H

for the following reaction

Fe_2O_3(s)+CO(g)\rightarrow 2FeO(s)+CO_2(g)

Multiple Choice Options

A +10.3 kJ
B $-43.3$ kJ
C $-10.3$ kJ
D +6.2 kJ

Step-by-Step Verified Solution

Given Fe 2 O 3(s) + 3CO (g) _ 2Fe (s) + 3CO 2(g) ; _ H = _ 26.8 kJ .....(1) FeO (s) + CO(g) _ Fe (s) + CO 2(g) ; _ H = _ 16.5 kJ .....(2) Fe 2 O 3(s) + CO (g) _ 2FeO (s) + CO 2(g) , _ H = ? ....(3) Equation (3) can be calculated as : (1) - 2(2) _ _ H = �26.8 + 33.0 = +6.2 kJ

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