The ph of blood is 7.35. it is maintained in part by the buffer system composed of carbonic acid (h2co3) and the bicarbonate (hydrogen carbonate, hco3-) ion. what is the ratio of [bicarbonate]/[carbonic acid] at this ph? for carbonic acid, ka1 = 4.2 10-7.a) [bicarbonate]/[carbonic acid] = 0.11d) [bicarbonate]/[carbonic acid] = 9.4b) [bicarbonate]/[carbonic acid] = 0.38e) none of the above ratios is correct. c) [bicarbonate]/[carbonic acid] = 2.65

Option (B) is the correct answer.

Explanation:

The given data is as follows.

         pH for blood = 7.35,                    

     For carbonic acid,

Therefore, calculate the pH of buffer solution as follows.

    pH =

          =

Now, putting the given values into the above formula as follows.

      pH =

        7.35 =

         7.35 =

                                       = 9.4

Therefore, we can conclude that the ratio of [bicarbonate]/[carbonic acid] at this pH is 9.4.