The composition of an acidic buffer made up of HA and NaA of total molarity 0 29 having pH =4 - Chemistry - Chemical and Ionic Equilibrium

Question

The composition of an acidic buffer made up of HA and NaA of total
molarity 0 29 having pH =4 4 and Ka=1 8×10^-5 in terms of
concentration of salt and acid respectively is

Yasodharan · Accepted Answer

Dear Student,

The computation is expressed below,

pH = -log Ka + log [Salt][Acid]by considering a mollt for salt abd b =0
29-a for acid we get,4
4 = -log (1 8×10-5) + log a0
29-aa = 0 09[Acid] = 0 29-a = 0 29-0
09 = 0 20M[Salt] = a = 0
09 M

Regards

The composition of an acidic buffer made up of HA and NaA of total molarity 0.29 having pH =4.4 and Ka=1.8×10^-5 in terms of concentration of salt and acid respectively is