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The DeltaH(f)^(@) for CO(2)(g), CO(g) an...

The `DeltaH_(f)^(@)` for `CO_(2)(g)`, CO(g) and `H_(2)O(g)` are `-395.5,-110.5` and `-241.8" kJ" mol^(-1)` respectively. The standard enthalpy change in (in kJ) for the reaction
`CO_(2)(g)+H_(2)(g)toCO(g)+H_(2)O(g)` is

A

`524.1`

B

`41.2`

C

`-262.5`

D

`-41.2`

Text Solution

Verified by Experts

The correct Answer is:
B
`DeltaH=-241-110.5-(-393.5)=41.2 kJ`
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DeltaH_(t)^(@) for CO_(2)(g) and H_(2)O(g) are -393.5, -110.5 and -241.8 kJ"mol"^(-1) respectively. The standard enthalpy change (in kJ) for the reaction. CO_(2)(g) + H_(2)(g) to CO(g) + H_(2)O(g) is:

Delta_(f)^(@) for CO_(2(g)), CO_((g)) and H_(2)O_((g)) are -393.5,-110.5 and -241.8kJ mol^(-1) respectively. The standard enthalpy change ( in kJ) for given reaction is : CO_(2(g))+H_(2(g)) rarr CO_((g))+H_(2)O_((g))

DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
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  2. Identify the state quantiy among the following

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  3. The DeltaH(f)^(@) for CO(2)(g), CO(g) and H(2)O(g) are -395.5,-110.5 a...

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  4. Which of the following statement is false ?

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  5. In thermodynamics, a process is called reversible when

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  6. One mole of non-ideal gas undergoes a change of state (2.0 "atm", 3.0 ...

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  7. Which of the following reactions will define DeltaH(f)^(@) ?

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  8. The enthalpy of vaporisation of a liquid is 30 kJ mol^(-1) and entropy...

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  9. Two moles of an ideal gas is expanded isothermally and reversibly from...

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  10. One mole of monoatomic ideal gas at T(K) is exapanded from 1L to 2L ad...

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  11. An ideal gas is allowed to expand both reversibly and irreversibly in ...

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  12. The standard enthalpy of formation (Delta(f)H^(@)) at 298K for methan...

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  13. (Delta H - Delta U) for the formation of carbon monoxide (CO) from its...

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  14. The enthalpy and entropy change for the reaction, Br(2)(l)+Cl(2)(g)r...

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  15. The enthalpy of hydrogenation of cyclohexene is -119.5kJ mol^(-1). If ...

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  16. The direct conversion of A to B is difficult, hence is carried out by ...

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  17. Consider the following reactions: (i) H^(+)(aq)+OH^(-)(aq)rarrH(2)O(...

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  18. Given the bond energies of H - H and Cl - Cl are 430 kJ mol^(-1) and 2...

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  19. In conversion of lime-stone to lime, CaCO(3(s)) to CaO((s)) + CO(2(g...

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  20. Assuming that water vapour is an ideal gas, the internal energy change...

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