The pK_a and pK_b of one weak acid (HA) and weak base (BOH) are 3.2 and 3.4 respectively. Find pH of its salt AB.

The pK_a and pK_b of one weak acid (HA) and weak base (BOH) are 3.2 an

1.	The pK_a and pK_b of one weak acid (HA) and weak base (BOH) are 3.2 and 3.4 respectively. Find pH of its salt AB.
Answer» 7.2 6.9 7.9 1 Solution :PH of WEAK ACID and weak BASE SALT, `pH=1/2(pK_w+pK_a-pK_b)` `=1/2(14+3.2-3.4)` `=1/2(13.8)=6.9`