The ionization constant of fromic acid is 1.8xx10^(-4). Calculate the ratio of sodium formate and formic acid in a buffer of pH 4.25 .

The ionization constant of fromic acid is 1.8xx10^(-4). Calculate the

1.	The ionization constant of fromic acid is 1.8xx10^(-4). Calculate the ratio of sodium formate and formic acid in a buffer of pH 4.25 .
Answer» Solution :`pK_(a) = - LOG (1.8xx10^(-4))=3.74` `log . (["Salt"])/(["ACID"])=pH - pK_(a) = 4.25 - 3.74 = 0.51 or (["Salt"])/(["Acid"])="ANTILOG " 0.51 = 3.24`.