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H(2)O(l)toH(2)O(g) , DeltaH=+43.7 kJ H...

`H_(2)O(l)toH_(2)O(g)` , `DeltaH=+43.7 kJ`
`H_(2)O(s)toH_(2)O(l)` , `DeltaH=+6.05kJ`
The value of `DeltaH_((sublimation))` of ice is

A

`49.75 kJ mol^(-1)`

B

`37.65 kJ mol^(-1)`

C

`43.7 kJ mol^(-1)`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
A
Add the two equations to get
`H_(2)O(s) to H_(2)O(g)`
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H_(2)O(s) rarr H_(2)O(l), DeltaH = 6.01 kJ DeltaH is the heat of …………………of ice.

DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
  1. The equilibrium constant for certain reaction is 100. If the value R i...

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  2. Bond dissociation energy of O(2)(g) is x k J mol^(-1). This means that

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  3. H(2)O(l)toH(2)O(g) , DeltaH=+43.7 kJ H(2)O(s)toH(2)O(l) , DeltaH=+6....

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  4. Given that CH(4)(g) +360 kJ rarr C(g) +4H(g) C(2)H(6)(g) +620 kJ r...

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  5. For a reaction Br(2)(l)+Cl(2)(g)to2BrCl at 300K the value of DeltaH=...

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  6. At what temperature, DeltaG of a reaction is equal to -5.2 kJ mol^(-1)...

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  7. For a reaction A(g)+3B(g)to2C(g) , DeltaH^(@)=-24kJ The value of D...

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  8. Consider the following reaction at equilibrium 2Fe^(2+)(aq)+Cu^(2+)to2...

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  9. A gas absorbs 400J of heat and expands by 2 xx 10^(-3) m^(3) against a...

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  10. The enthalpy of formation of ammonia is -46.0 kJ mol^(-1). The enthalp...

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  11. Which one of the following relations is incorrect ?

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  12. The work done by the system in a cyclic process involving one mole of ...

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  13. The work done by the system in the conversion of 1 mol of water at 100...

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  14. If DeltaH(f)(X), DeltaH(f)(Y), DeltaH(f)(R ) and DeltaH(f)(S) denote t...

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  15. The enthalpy of the reaction H(2)(g)+(1)/(2)O(2)(g)toH(2)O(g) is Del...

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  16. The enthalpy of the reaction : H(2)O(2)(l)toH(2)O(l)+(1)/(2)O(2)(g) ...

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  17. One mole of a gas absorbs 200 J of heat at constant volume. Its temper...

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  18. Work done on a system when one mole of an an ideal gas at 500 K is com...

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  19. For the reversible isothermal expansion of one mole of an ideal gas at...

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  20. The latent heat of vaporisation of water at 100 ^(@)C is 540 cal g^(-1...

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