For a buffer solution of CH3COOH and CH3COONa if [CH3COOH],[CH3COONa]=1 and pKa=4.74 the pH value of the solution will be

Question

For a buffer solution of CH3COOH and CH3COONa if [CH3COOH],[CH3COONa]=1 and pKa=4.74 the pH value of the solution will be (A) 5.74 (B) 6.74 (C) 3.74 (D) 4.74

Tardigrade Admin · Accepted Answer

pH=pKa+ log ([salt]/[acid]) =4.74+log(1/1) =4.74

Q. For a buffer solution of $C H_{3} COO H$ and $C H_{3} COON a$ if $[C H_{3} COO H], [C H_{3} COON a] = 1$ and $p K_{a} = 4.74$ the pH value of the solution will be

5.74

6.74

3.74

4.74

$p H = p K_{a} + lo g \frac{[ s a lt ]}{[ a c i d ]}$
$= 4.74 + l o g \frac{1}{1}$
$= 4.74$

Q. For a buffer solution of CH3​COOH and CH3​COONa if [CH3​COOH],[CH3​COONa]=1 and pKa​=4.74 the pH value of the solution will be