The following two reactions are known Fe2O3(s) + 3CO(g) arrow 2Fe(s) + 3CO2(g); Δ H = - 26.8 kJ FeO(s) + CO (g) arrow Fe(s) + CO2(g); Δ H - 16.5 kJ The value of Δ H for the following reaction Fe2O3(s) + CO(g) arrow 2FeO(s) + CO2(g) is

Question

The following two reactions are known Fe2O3(s) + 3CO(g) arrow 2Fe(s) + 3CO2(g); Δ H = - 26.8 kJ FeO(s) + CO (g) arrow Fe(s) + CO2(g); Δ H - 16.5 kJ The value of Δ H for the following reaction Fe2O3(s) + CO(g) arrow 2FeO(s) + CO2(g) is (A) - 43.3 kJ (B) -10.3 kJ (C) +6.2 kJ (D) +10.3 kJ

Tardigrade Admin · Accepted Answer

Given, (I) F e2 O(s)+3 C O(g) arrow 2 F e(s)+3 C O2(g) Δ H=-26.8 kJ (II) F e O(s)+C O(g) arrow F e(s)+C O2(g) Δ H=-16.5 kJ On multiplying Eq (II) with 2 , we get (III) 2 F e O(s)+2 C O(g) arrow 2 F e(s)+2 C O2(g) Δ H=-33 kJ On subtracting Eq (III) from I, we get Fe 2 O 3(s)+C O(g) arrow 2 F e O(s)+C O2(g) Δ H=-26.8-(-33) =+6.2 kJ

Q. The following two reactions are known Fe2​O3​(s)+3CO(g)→2Fe(s)+3CO2​(g);ΔH=−26.8kJ FeO(s)+CO(g)→Fe(s)+CO2​(g);ΔH−16.5kJ The value of ΔH for the following reaction Fe2​O3​(s)+CO(g)→2FeO(s)+CO2​(g) is

- 43.3 kJ

-10.3 kJ

+6.2 kJ

+10.3 kJ

Q. The following two reactions are known $F e_{2} O_{3} (s) + 3 CO (g) \to 2 F e (s) + 3 C O_{2} (g); Δ H = - 26.8 k J$
$F e O (s) + CO (g) \to F e (s) + C O_{2} (g); Δ H - 16.5 k J$
The value of $Δ H$ for the following reaction $F e_{2} O_{3} (s) + CO (g) \to 2 F e O (s) + C O_{2} (g)$ is