Question

Part A) John Doe is on medication which makes his blood slightly alkaline (basic). What will the carbonic acid buffer system do to maintain John's blood pH at the normal level of 7.4?
A.The buffer system will not make any changes to the blood pH.
B.The buffer system will donate H+ into the blood.
C. The buffer system will remove H+ out of the blood.

Part B) If a solution with a pH = 5 changed to a pH = 6, did the solution become more acidic or basic? Does the solution with a pH of 6 have more or less H+ ions compared to the solution with a pH =5?
A.More acidic; less H+
B.More basic; less H+
C.More basic; more H+
D.More acidic; more H+

Answer 1

PartA)

B) The buffer system will donate H+ into the blood

Explanation

Buffers having acid and its conjucate base. Carbonic acid buffer system give H+ ions and it will react with excess OH- ions , thus maintain the pH 7.4

Part B

B) More basic: less H+

Explanation

if pH is increased Acidity will decrease and basisity will increase

pH = - log[H+]

if pH is 5

-log[H+] = 5

[H+] = 10^-5M

if pH is 6

-log[H+] = 6

[H+] = 10^-6M

So, Concentration of H+ ions decreased at pH 6 comparing at pH 5