PKa of a weak acid (HA) is 4.5. The ratio of concentration of HA and A^- to have a buffer solution ofpH 5.5 will be1:1001:101:12:5

PKa of a weak acid (HA) is 4.5. The ratio of concentration of HA and

1.	PKa of a weak acid (HA) is 4.5. The ratio of concentration of HA and A^- to have a buffer solution ofpH 5.5 will be1:1001:101:12:5
Answer» When [A-]/[HA] remains close to 1, the pH remains close to pKa. As [A-]/[HA] goes from 1/10 to 10 the pH changes from pKa+1 to pKa-1. So as long as [A-]/[HA] is between 1/10 and 10, the pH is WITHIN 1 unit of pKa. The addition of a STRONG acid or base to a buffer changes the ratio [A-]/[HA].hope it HELPS YOUPLEASE MARK me brainliest