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The ionisation constant of acetic acid ...

The ionisation constant of acetic acid is `2 xx 10^(-5)` The pH of buffer containing acetic acid and sodium acetate is `4.7`. The ratio of [acid] to [salt]

A

`1:1`

B

`10:1`

C

`1:10`

D

`2:1`

Text Solution

Verified by Experts

The correct Answer is:
A
`pH=pKa+log""([S])/([A])`
`4.7=4.7+log_(10)""([S])/([A])" ":.([S])/([A])=1:1`
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NARAYNA-ACIDS & BASES-EXERCISE-I (H.W) (SALT HYDROLYSIS & BUFFERS)
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  2. When the following is added to 20 ml of 0.1 M CH(3)COOH + 20 ml 0.1 M ...

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  3. An acidic buffer contains equal concentrations of acid and salt. The d...

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  4. 50 mL of 0.1 M solution of sodium acetate and 50 mL of 0.01 M acetic ...

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  5. The K(b) of weak base is 10^(-4). The ["salt"] to ["base"] ratio to be...

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  6. The ionisation constant of acetic acid is 2 xx 10^(-5) The pH of buff...

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  7. When 0.1 mole of an acid is added to 2 L of a buffer solution, the P...

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  8. 5 moles of acid is required to change the pH of 1 litre of buffer by 2...

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  9. A certain buffer solution contains equal concentrations of B^(+) & BOH...

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  10. P^(H) of CH(3)COOH and CH(3)COONa buffer is 4.8 in Which of the follow...

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  11. NH(4)OH is weak base but it becomes still weaker in the aqueous soluti...

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  13. The solubility of CaF(2) is 2 xx 10^(-4) "mole"//"litre". Its solubili...

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  15. If the solubility product of MOH is 1xx10^(-10) mol^(2) dm^(-6) then p...

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  16. What is minimum concentration of SO(4)^(2-) required to precipitate Ba...

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  17. The P^(H) of saturated aqueous solution of Ba(OH)(2) is 10. If the K(s...

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  18. Find the change in pH when 0.01 mole CH(3)COONa is added to one litre ...

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  19. 2g of NaOH per 250 mL of solution is added to a buffer solution of buf...

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  20. The precipitate of CaF(2) (K(sp)=1.7xx10^(-10)) is obtained when equal...

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