Question

How many grams of solid sodium acetate should be added to 1.00 L of a 0.284 M acetic acid solution to prepare a buffer with a pH of 5.292 ?

grams sodium acetate =  g.

Answer 1

I have provided the details of the solution. Just go through it.

So 81.12 gm of sodium acetate is added to the solution.
Accoreding to the Henderson Hassel- balch equation, the pH of a weak acid and its salt solution (Buffer Solution is expreessed as a pH = pkalt log kalt so here geven, pH = 5.292 aid) = 0.284M pka A acetic and = 4,75 50 5.292=4.75tlog salt)

0.542 = log sa alt] 0.284 & Salt] 10.542 7 0.284 - Salt] = 0.884 3.483 = 0.999 M So 12 of the solution contains 0.989 moles of so ė salt. I mole # Chaccoona = 82 grecamas 0,989 moles o# CHOCOo na = 82X0.989 = 81.129m