50 ml of 0.1 M solution of sodium acetate and 50 mlof 0.01 M acetic acid are mixed . The pKa of acetic acid is 4.76 TheP^(H)ofthe buffer solution is

50 ml of 0.1 M solution of sodium acetate and 50 mlof 0.01 M acetic ac

1.	50 ml of 0.1 M solution of sodium acetate and 50 mlof 0.01 M acetic acid are mixed . The pKa of acetic acid is 4.76 TheP^(H)ofthe buffer solution is
Answer» Solution :NUMBER of milliequivalents of acid `= 20 xx 0.2 = 2` Number of milliequivalents of salt `= 40 xx0.1 = 4` ` PH =pK_a +log ""(["Salt"])/("[acid]")=4.8 + log = 4.8+ 0.3= 5.1`