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Explain why heat of neutralisation of st...

Explain why heat of neutralisation of strong acid and weak base is less than `57.1 kJ`.

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It is because weak bases do not ionise completely in aqueous solution. Therefore, some enegry is required for their complete ionisation and that is why net energy released is less.
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Assertion(A) : The value of enthalpy of neutralisation of strong acid and weak base is numerically less than 57.1 kJ . Reason(R ) : All the H^(+) ions furnished by 1g equivalent of a strong acid are not completely neutralized by the OH^(-) ions from the weak base.

Given that, heat of neutralisation of strong acid and strong base is 57.1 kJ. Calculate the heat produced when 0.25 mole of HCl is neutralised with 0.25 mole of NaO in aqueous solution:

Enthalpy of neutralisation of acetic acid by NaOH is 50.6 kJ/mol. Calculate Delta H for ionisation of CH_(3)COOH . Given, the heat of neutralisation of a strong acid with a strong base is -57.3 kJ/mol.

The heat of neutralization of any strong acid and strong base is always constant and DeltaH=-57.3kJ . This because.

CENGAGE CHEMISTRY-THERMODYNAMICS-Exercises (Subjective)
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  2. The heat of neutralization of a strong acid by a strong base is a cons...

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  3. Explain why heat of neutralisation of strong acid and weak base is les...

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  4. Find the enthalpy of formation of hydrogen flouride on the basis of fo...

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  5. Calculate DeltaH for the reaction H(2)(g)+1//2O(2)(g)toH(2)O(g) gi...

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  6. Calculate the resonance enegry of NO(2) ( :O-N=O: ) The measured ent...

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  7. Boiling point of an organic compound is 310K. Its enthalpy of vaporisa...

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  8. Predict whether the following reaction is possible or not at 300k. 2...

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  9. Calculate the standard free energy change for the reaction: H(2)(g)...

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  10. Calculate the entropy change for the following reaction H(2)(g) +CI(...

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  11. Heat of neutralisation between HCI and NaOH is 13.7kcal and between HC...

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  12. Find the heat of formation of ethyl alcohol for following data C(s) ...

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  13. Enthalpy of neutralisation of acetic acid by NaOH is -50.6 kJ mol^(-1)...

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  14. The enthalpies of combustion of carbon and carbon monoxide in excess o...

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  15. Calculate the DeltaH^(Theta) for the reduction of Fe(2)O(3)(s) by AI(s...

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  16. Find DeltaH of the following reaction: OF(2)(g) +H(2)O(g) rarr O(2)(...

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  18. Find the electron affinity of chlorine from the following data. Enthal...

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  19. When 10g of AI is used for reduction in each of the following alumino ...

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