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For the process NH(3)(g) +HCI(g) rarr ...

For the process
`NH_(3)(g) +HCI(g) rarr NH_(4)CI(s)`

A

Both `DeltaH` and `DeltaS` are +ve

B

`DeltaH` is -ve `DeltaS` is +ve

C

`DeltaH` is +ve `DeltaS` is -ve

D

Both `DeltaH` and `DeltaS` are -ve

Text Solution

Verified by Experts

The correct Answer is:
D
Neutralisation is an exothermic process, therefore, `DeltaH=-ve` `': DeltaS= -ve` (entropy decreases)
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Predict DeltaS for the reaction : NH_(3)(g) + HCI (g) to NH_(4)CI(s) .

For the reaction N_(2)(g) + 3H_(2)(g) rarr 2NH_(3)(g) , DeltaH = -93.6 KJ mol^(-1) the formation of NH_(3) is expected to increase at :

A 5.00L evacuated cylinder is charged with 25.5g of NH_(3) and 36.4 g of HCl. Calculate the final pressure at 85.0^(@)C after the two compounds have reacted completely: NH_(3)(g)+HCl(g)rarrNH_(4)CI(s)

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DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
  1. The latent heat of vaporisation of water at 100 ^(@)C is 540 cal g^(-1...

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  2. Given that (1)/(2)S(8)(s)+6O(2)(g)to4SO(3)(g), DeltaH^(@)=-1590 kJ T...

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  3. For the process NH(3)(g) +HCI(g) rarr NH(4)CI(s)

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  4. The enthalpy change at 298 K of the reaction H(2)O(2)(l)toH(2)O(l)+1...

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  5. If S+O(2)toSO(2),DeltaH=-298.2 " kJ" " mole"^(-1) SO(2)+(1)/(2)O(2)t...

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  6. The entropy change for the fusion of 1 mol of a solid which melts at 2...

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  7. The heat change for the following reaction at 298 K and constant press...

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  8. Which of the following equations express DeltaH as heat of combustion ...

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  9. The enthalpy of formation of ammonia is -46.0 KJ mol^(-1) . The entha...

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  10. The heat evolved in combustion of benzene is given by the following eq...

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  11. DeltaG for a reaction at 300 K is -16 kcal and DeltaH is -10 kcal. The...

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  12. Enthalpy of neutralisation of NH(4)OH and HCl is numerically

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  13. The following are the heats of reactions - (i) Delta H(f)^(@) of H(2...

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  14. The heat of combustion of CH(4(g)), C((g)) and H(2(g)) at 25^(@)C are ...

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  15. One mole of ice is converted into water at 273 K. The entropies of H(2...

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  16. The equilibrium constant for a reaction is 10. What will be the value ...

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  17. One mole of an ideal gas expanded freely and isothermally at 300 K fro...

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  18. For the reaction C(6)H(12)(l)+9O(2)(g)to6H(2)O(l)+6CO(2)(g) , DeltaH...

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  19. Given that the data for neutralization of weak acid (HA) and strong ac...

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  20. A system absorbs 10 kJ of heat at constant volume and its temperature ...

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