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Q 1119123910.     A buffer solution contains `500 `ml of `0.2 M CH_3COONa and 500 `ml of `0.1` M `CH_3COOH. 1 L` of water is added to this buffer.
What will be the pH before and after dilution? `(pK_a` of `CH_3COOH = 4.74)`
Use formula: `pH ``= pK_a + log([[CH_3COO^−]]/[[CH_3COOH]])`
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)