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Hydrolysis constant of salt derived from...

Hydrolysis constant of salt derived from strong acid and weak base is `2xx 10 ^(-5) ` .The dissociation constant of the weak base is

A

` 5xx10 ^(-8) `

B

` 5xx10 ^(-9) `

C

` 5xx10 ^(-10) `

D

` 2xx10 ^(-19) `

Text Solution

Verified by Experts

The correct Answer is:
C
` K_h= (K_w)/(K_b) rArr K_b =(1xx 10 ^(-14))/(2xx 10 ^(-5)) = 5 xx 10 ^(-10) `
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AAKASH SERIES-IONIC EQUILIBRIUM -LECTURE SHEET (EXERCISE -III LEVEL -I (MAIN ) (Straight Objective Type Questions))
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  2. The hydrolysis constant of CH3 COONa is given by

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  3. Hydrolysis constant of salt derived from strong acid and weak base is ...

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  4. The hydrolysis constant of NaX (Ka of HX is 2xx 10 ^(-6)) is

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  5. The P^(H) of 0. 1M solution of the following compounds increases i...

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  6. Assertion (A): Aqueous solution of ammonium acetate is neutral Reaso...

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  7. Which of the following pair of solutions does not form a buffer soluti...

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  8. IM NaCl and IM HCI are present in an aqueous solution. The solution is

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  9. A buffer solution contains a weak acid HA and A . When small quantity ...

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  10. Which of the following is correct for acid buiter? [salt = S, acid = A...

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  11. On diluting a buffer solution, its pH :

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  12. For the buffer solution containing NH(4)OH and NH(4) CI, P^(H) of the ...

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  13. An acidic buffer contains equal concentration of acid and salt . The d...

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  14. K(a) for HCN is 5 xx 10^(-10) at 25^(@)C . For maintaining a constant ...

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  15. pH of a mixture of HA and A^(-) buffer is 5. Kb of A^(-) =10 ^(-10 )...

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  16. A buffer solution contains 0.2 mole of NH4 OH and 0.2 mole of NH4 Cl...

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  17. From the following table {:("Buffer solution ", "Vol .of 0.1 M weak ac...

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  18. Which buffer solution has maximum pH?

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  19. Buffer capacity of acidic buffer solution is maximum when (1) P^(H)...

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  20. When 0.02 mole of an alkali is added to an acid buffer , the pH change...

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