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The following two reactions are known : ...

The following two reactions are known : `Fe_(2)O_(3)(s) + 3 CO(g) rightarrow 2 Fe(s) + 3CO_(2)(g),` ` Delta H = -26.5 kJ`
`FeO(s) + CO(g) rightarrow 2 Fe(s) + CO_(2)(g),` ` Delta H = -16.5 kJ`
The value of `Delta H ` for the following reaction
`Fe_(2)O_(3)(s) + CO(g) rightarrow 2 FeO(s) + CO_(2)(g),` is

A

`-43.3 kJ`

B

`-10.3 kJ`

C

`+6.2 kJ`

D

`+10.3 kJ`

Text Solution

Verified by Experts

The correct Answer is:
C
eq. (iii) = eq (i) `-2xx` eq (ii)
`Delta H_(3)=Delta H_(1)-2xx Delta H_(2)`
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ALLEN-THERMODYNAMICS -EXERCISE -1A
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  7. Which of the following is not a state function?

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  9. Enthalpy change for the reaction, 4H(g) to 2H2(g) is -869.6 kJ Th...

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  10. Which of the following is correct option for free expansion of an idea...

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  11. Consider the following processes : {:(,DeltaH(kJ//"mol")),(1/2ArarrB...

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  12. The enthalpy of formation of CO(g), CO(2)(g),N(2)O(g) and N(2)O(4)(g) ...

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  13. For adiabatic process which is correct -

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  14. Which of the following is not thermodynamical function /

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  15. Which of the following is intensive property?

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  16. In which of the following reactions, standard reaction entropy changes...

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  20. At equilibrium which is correct?

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