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A buffer solution is prepared by mixing ...

A buffer solution is prepared by mixing `10ml` of `1.0 M` acetic acid & `20 ml` of `0.5 M` sodium acetate and then diluted to `100ml` with distilled water. If the `pK_(a)` of `CH_(3)COOH` is `4.76`. What is the pH of the buffer solution prepared?

A

3.84

B

4.76

C

4.34

D

5.21

Text Solution

Verified by Experts

The correct Answer is:
B
`p^(H)=p^(ka)+log""(["salt"])/(["acid"])=4.75+log""(20xx0.5)/(10xx1)`
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A buffer solution is prepared by mixing 10 mL of 1.0 M CH_(3)COOH and 20 mL of 0.5 M H_(3)COONa and then diluted to 100 mL with distilled water. If pKa of CH_(3)COOH is 4.76, what is the pH of the buffer solution?

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Knowledge Check

  • A buffer solution is prepared by mixing 20 ml of 0.1 M CH_3COOH and 40 ml of 0.5 M CH_3COONa and then diluted by adding 100 ml of distilled water . The pH of resulting buffer solution is (Given pK_a CH_3COOH=4.76 )

    A
    5.76
    B
    4.67
    C
    3.48
    D
    5.9

  • 50 mL of 0.1 M solution of sodium acetate and 50 mL of 0.01 M acetic acid mixed. The pK_(a) of acetic acid is 4.76 . The P^(H) of the buffer solution is

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    `3.76`
    B
    `4.76`
    C
    `5.76`
    D
    `9.24`

  • Find the pH of solution prepared by mixing 25 ml of a 0.5 M solution of HCl, 10 ml of a 0.5 M solution of NaOH and 15 ml of water

    A
    `0.8239`
    B
    `1.0029`
    C
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    D
    `1.8239`

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