A solution containing a mixture of lactic acid and lactate was found to have a pH of 4.26. Calculate the ratio of the lactate concentration to the lac

Given :

pH of solution of mixture of lactic acid and lactate is 4.26 .

To Find :

The ratio of the lactate concentration to the lactate .

Solution :

We know , pKa of lactic acid is :

pKa = 3.86 .

Now , the solution of lactic acid and lactate is a buffer solution .

So , pHof buffer acid is given by :

Putting all given values :

Taking anti log both the sides , we get :

Therefore , the ratio of the lactate concentration to the lactate is 2.51 .

Hence , this is the required solution .

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8