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In which of the following reactions, the...

In which of the following reactions, the enthalpy is the least ?

A

`CH_(3)COOH+NaOHtoCH_(3)COONa+H_(2)O`

B

`HCl+NH_(4)OHtoNH_(4)Cl+H_(2)O`

C

`HCl+NaOHtoNaCl+H_(2)O`

D

`HCN+NH_(4)OHtoNH_(4)CN+H_(2)O`

Text Solution

Verified by Experts

The correct Answer is:
D
Because neutralization involves weak acid `(HCN)` and weak and base both will involve ionization energy.
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DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
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  2. Changes in a system from a initial state to the final state were made ...

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  3. In which of the following reactions, the enthalpy is the least ?

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  4. According to the first law of thermodynamics which of the following qu...

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  5. A 1.0g sample of substance A at 100^(@)C is added to 100 mL of H(2)O ...

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  6. The amount of heat evolved when 500 cm^(3) 0.1 M HCl is mixed with 200...

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  7. Based on first law of thermodynamics, which one of the following is co...

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  8. The value of enthalpy change (DeltaH) for the reaction C(2)H(5)OH (l...

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

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  10. The entropy change involved in the isothermal reversible expansion of ...

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  11. Enthalpy change for the reaction 2H(2)(g)rarr4H(g) is -869.6kJ Th...

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  12. Consider the reaction, 4NO(2)(g)+O(2)(g)rarr2N(2)O(5)(g),Delta(r )H=...

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  13. In view of the signs of Delta(r)G^(0) for the following reactions Pb...

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  14. Consider the following processes :- {:(,DeltaH(kJ//mol)),((1)/(2)A r...

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  15. At the sublimation temperature, for the process CO(2)(S)toCO(2)(g)

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  16. Which of the following sets of conditions would result in a reaction t...

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  17. The enthalpy of solution of sodium chloride is 4 kJ mol^(-1) and its e...

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  18. The standard enthalpy of formation of C(2)H(4)(l), CO(2)(g) and H(2)O(...

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  19. In which of the following reactions,standard reaction entropy change(D...

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  20. The enthalpy of fusion of water is 1.435 kcal//"mole". The molar entro...

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