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The pK(a) of acetic acid and pK(b) of am...

The `pK_(a)` of acetic acid and `pK_(b)` of ammonium hydroxidw are `4.76` and `4.75` respectively. Calculate the pH of ammonium acetate solution.

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As `CH_3COONH_4` is a salt of weak acid and weak base.
`pH=7+1/2[pK_a-pK_b]`
`=7+1/2(4.76-4.75)`
`=7+0.005 =7.005`
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AAKASH INSTITUTE ENGLISH-EQUILIBRIUM-ASSIGNMENT (SECTION -D)
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  2. A : At higher temperature , Kw of water remains unaltered. R: kw is ...

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  3. A : HCI, HNO3 and H2SO4 are equalty strong acids in water R : Water ...

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  4. A : Increasing the concentration of H2 will increases magnitude of e...

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  5. A : Increasing the temperature , increases [H^+] concentration in wat...

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  6. A : Solution of CH3COONH4 is a buffer solution R: H^+ ion added will...

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  7. A : K(sp) is a constant value for any salt at particular temperature ...

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  8. A : H3O^+ ion from water is also taken in consideration while calcula...

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  9. A : pH of 10^(-8) M HCI solution is approx 6.9 R : HCI is a strong a...

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  10. A : For equilibrium ice hArr water on increasing temperature and pres...

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  11. Assertion: At equilibrium the concentration of all reactants and produ...

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  12. A : pH of 0.1 M HCI solution is less than 0.1 M HCN solution R : In ...

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  13. A : A catalyst does not alter the equilibrium constant of a reaction ...

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  14. A : pH of equimolar solution of NH4 CI and NH4OH does not change when ...

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  15. A: The reaction 2NO(g) +O2(g) hArr 2NO2(g) is favoured in the forwar...

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  16. A : pH of 1 M NaCI solution is 7 at 25^@C. R : pH of this solution d...

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  17. A : CO2 is a Lewis acid. R : H2SO4 is Arrhenius acid as well as Bron...

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  18. A : For H2CO3 K(a1) lt K(a2). R : H2CO3 is weaker acid than HCO3^-

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  19. A : pH of mixture of 0.1 M HCN and 0.05 M NaOH is less than 7 . R : ...

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  20. STATEMENT-1: Solubility of AgCN in NH(3) (aq.), is greater than in pur...

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  21. A : Precipitates formation takes place when K(ip) gt K(sp) . R : K...

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