CHE 31 Lecture Notes - Buffer Solution, Conjugate Acid, Weak Base

1) If a buffer solution is 0.220 M in a weak acid (Ka = 3.6 � 10-5) and 0.450 M in its conjugate base, what is the pH?2)If a buffer solution is 0.200 M in a weak base (Kb = 4.3 � 10-5) and 0.480 M in its conjugate acid, what is the pH?

What are the major species in a buffer solution?

A. a weak acid and a strong base

B. a weak acid and a weak base

C. a weak acid and its conjugate base

D. a weak base and a strong acid

E. none of the above

If a buffer solution is 0.220 M in weak acid (Ka=4.0x10^-5) and 0.440 M in its conjugate base, what is the pH?

If a buffer solution is 0.170 M in a weak base (Kb-7.1x10^-5) and 0.550 M in its conjugate acid, what is the pH?

Please show how to derive answer. I will rate you. Thank you!