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100 mL of 0.3 N-Acetic acid solution is ...

`100 mL` of `0.3 N`-Acetic acid solution is mixed with same volume of `0.2 N` sodium hydroxide solution. Ionisation constant of acetic acid is `2 xx 10^(-5)` the pH of the mixture is

A

10

B

7

C

5

D

9

Text Solution

Verified by Experts

The correct Answer is:
C
`CH_(3)COOH+NaOHtoCH_(3)COONa+H_(2)O`
`100xx0.3" "100xx0.2`
`(CH_(3)COOH)=(100xx0.3)-(100xx0.2)`
`[CH_(3)COONa]=100xx0.2`
`pKa=-logk_(a)`
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NARAYNA-ACIDS & BASES-EXERCISE-I (H.W) (SALT HYDROLYSIS & BUFFERS)
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  2. K(a) for HCN is 5 xx 10^^(-10) at 25^(@)C. For maintaining a constant ...

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  3. 100 mL of 0.3 N-Acetic acid solution is mixed with same volume of 0.2 ...

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  4. When the following is added to 20 ml of 0.1 M CH(3)COOH + 20 ml 0.1 M ...

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

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  6. 50 mL of 0.1 M solution of sodium acetate and 50 mL of 0.01 M acetic ...

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

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

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

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  10. 5 moles of acid is required to change the pH of 1 litre of buffer by 2...

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

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

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

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  14. Soluility product of Ba(OH)(2) and Al(OH)(3) are 1.8 xx 10^(10) and 2....

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

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  16. if solubility product of MOH is

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

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

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

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

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