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The pH of 1 M CH3COONa solution in water will be nearly (pKa for CH3COOH = 4.74)

Option 1 -

6.4

Option 2 -

10.4

Option 3 -

9.4        

Option 4 -

7.4

0 13 Views | Posted a month ago
Asked by Shiksha User

  • 1 Answer

  • V

    Answered by

    Vishal Baghel | Contributor-Level 10

    a month ago
    Correct Option - 3


    Detailed Solution:

    CH3COONa is salt of weak acid with strong base

    ∴ p H = 7 + 1 2 p K a + 1 2 l o g C

    p H = 7 + 1 2 × 4 . 7 4 + 1 2 × l o g 1

    p H = 9 . 3 7 ≈ 9 . 4

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