K_a of acetic acid is 1.8 xx 10^(-5). How much sodium acetate is to be added to llitre 0.1M acetic acid to make a buffer of pH = 4 ?

K_a of acetic acid is 1.8 xx 10^(-5). How much sodium acetate is to be

1.	K_a of acetic acid is 1.8 xx 10^(-5). How much sodium acetate is to be added to llitre 0.1M acetic acid to make a buffer of pH = 4 ?
Answer» SOLUTION :`1.48g`