Question

The pk of a weak acid is 4.8 what should be the ratio of acid by salt of a buffer if ph is equal to 5.8 is required

Answer 1

for buffer solution
pH=pKa+$log$[salt]/[acid]
5.8=4.8+log[salt]/[acid]
1=log[salt]/[acid]
[salt]/[acid]=antilog1
[salt]/[acid]=10
[acid]/[salt]=0.1