Determine the heat of the following reaction-FeOs - Fe2 O3 s - Fe3O4 sGiven informations-2Fes - O2 g - 2FeOs - - H- - - 544 kJ4Fes - 3O2 g - 2Fe2O3s - - H- - - 1648-4 kJFe3O4 s - 3Fes - 2O2g - - H- - -1118-4 kJ

2FeO(s) → 2Fe(s) + O_2 (g) ; Δ H^∘ = + 544 kJ 2Fe_2O_3 (s) → 4Fe(s) + 3O_2 (g) ; Δ H^∘ = + 1648.4 kJ 6Fe(s) + 4O_2(g) → 2Fe_3O_4(s) ; Δ H^∘ = 2 × 1118.4 k ...

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Standard XII

Chemistry

Enthalpy

Determine the...

Question

Determine the heat of the following reaction:
$F e O (s) + F e_{2} O_{3} (s) \to F e_{3} O_{4} (s)$
Given informations:
$2 F e (s) + O_{2} (g) \to 2 F e O (s); Δ H^{\circ} = - 544 k J 4 F e (s) + 3 O_{2} (g) \to 2 F e_{2} O_{3} (s); Δ H^{\circ} = - 1648.4 k J F e_{3} O_{4} (s) \to 3 F e (s) + 2 O_{2} (g); Δ H^{\circ} = + 1118.4 k J$

- 1074 k J

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- 22.2 k J

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+ 249.8 k J

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+ 2214.6 k J

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Solution

The correct option is B $- 22.2 k J$
$2 F e O (s) \to 2 F e (s) + O_{2} (g); Δ H^{\circ} = + 544 k J 2 F e_{2} O_{3} (s) \to 4 F e (s) + 3 O_{2} (g); Δ H^{\circ} = + 1648.4 k J$
$6 F e (s) + 4 O_{2} (g) \to 2 F e_{3} O_{4} (s); Δ H^{\circ} = - 2 \times 1118.4 k J - ------------------------------------------------------------ -$
On adding.
$2 F e O (s) + 2 F e_{2} O_{3} (s) \to 2 F e_{3} O_{4} (s); Δ H^{\circ} = - 44.4 k J - ----------------------------------------------------------- - ∴ F e O (s) + F e_{2} O_{3} (s) \to F e_{3} O_{4} (s); Δ H^{\circ} = - 22.2 k J$

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Similar questions

Q. Determine the heat of the following reaction:

F e O (s) + F e_{2} O_{3} (s) \to F e_{3} O_{4} (s)

Given informations:

2 F e (s) + O_{2} (g) \to 2 F e O (s); Δ H^{\circ} = - 544 k J 4 F e (s) + 3 O_{2} (g) \to 2 F e_{2} O_{3} (s); Δ H^{\circ} = - 1648.4 k J F e_{3} O_{4} (s) \to 3 F e (s) + 2 O_{2} (g); Δ H^{\circ} = + 1118.4 k J

Q. Determine the heat of the following reaction:

F e O (s) + {F e}_{2} O_{3} (s) ⟶ {F e}_{3} O_{4} (s)

Given informations:

2 F e (s) + O_{2} (g) ⟶ 2 F e O (s); Δ H^{o} = - 544 k J

4 F e (s) + 3 O_{2} (g) ⟶ 2 {F e}_{2} O_{; 3} (s); Δ H^{o} = - 1648.4 k J

{F e}_{3} O_{4} (s) ⟶ 3 F e (s) + 2 O_{2} (g); Δ H^{o} = + 1118.4 k J

Q. The following two reactions are known

F e_{2} O_{3 (s)} + 3 C O_{(g)} \to 2 F e (s) + 3 C O_{2 (g)}

;

Δ H = - 26.8 k J

F e O_{(s)} + C O_{(g)} \to F e_{(s)} + C O_{2 (g)} Δ H = - 16.5 k J

The value of

Δ H

for the following reaction is:

F e_{2} O_{3 (s)} + C O_{(g)} \to 2 F e O_{(s)} + C O_{2 (g)}

Q. Determine the heat of the following reaction:

F e O (s) + F e_{2} O_{3} (s) \to F e_{3} O_{4} (s)

Given informations:

2 F e (s) + O_{2} (g) \to 2 F e O (s); Δ H^{\circ} = - 544 k J 4 F e (s) + 3 O_{2} (g) \to 2 F e_{2} O_{3} (s); Δ H^{\circ} = - 1648.4 k J F e_{3} O_{4} (s) \to 3 F e (s) + 2 O_{2} (g); Δ H^{\circ} = + 1118.4 k J

Q. Find the heat of formation of ethyl alcohol from following data

C (s) + O_{2} (g) ⟶ C O_{2} (g)

......

Δ H = - 94 K c a l

H_{2} (g) + I / 2 O_{2} (g) ⟶ H_{2} O (l)

;....

Δ H = - 68 K c a l

C_{2} H_{5} O H (l) + 3 O_{2} (g) ⟶ 2 C O_{2} (g) + 3 H_{2} O (l)

.....

Δ H = - 327 K c a l

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Determine the heat of the following reaction: FeO(s)+Fe2O3(s)→Fe3O4(s) Given informations: 2Fe(s)+O2(g)→2FeO(s); ΔH∘=−544 kJ4Fe(s)+3O2(g)→2Fe2O3(s); ΔH∘=−1648.4 kJFe3O4(s)→3Fe(s)+2O2(g);ΔH∘=+1118.4 kJ