List of top Chemistry Questions on Buffer Solutions asked in COMEDK UGET

What volume of \(0.2M \, CH_3COOH\) needs to be added to \(100 \, ml\) of \(0.4M \, CH_3COONa\) solution to prepare a buffer of pH equal to \(4.91\)? Given that \(pK_a\) of \(CH_3COOH\) is \(4.76\).