Henderson-Hasselbalch

A buffer is created from acetic acid (pKa =4.8) and its conjugate base acetate and adjusted to a pH of 5.8. Which of the following is true about the solution?

A buffer is created out of benzoic acid (pKa = 4.2) and its conjugate base, benzoate, and adjusted to a pH of 2.2. Which of the following is true of the solution?

A buffered solution of carbonic acid (pK_a = 6.4) and bicarbonate was created and adjusted to a pH of 5.4. By what factor is the carbonic acid concentration increased in comparison to bicarbonate concentration in the buffer solution?

Hydrazoic acid (pK_a = 4.72) is buffered to a pH of 5.72 what is the ratio of [HN₃] to [N₃^–] in the buffered solution?

A lactic acid (pK_a = 3.86) buffer is created from 0.54 M lactic acid and 0.0054M lactate. What is the pH of the lactic acid buffer?

A buffered solution contains 0.2 M of CHOOH (pKa = 3.7) and 0.002 M of CHOO^–. What will the pH of the buffer be? 

A buffered solution contains 0.02 M of CHOOH (pKa = 3.7) and 0.002 M of CHOO^–. What will the pH of the buffer be? 

A buffered solution of acetic acid (pK_a =4.8) and acetate is adjusted to a pH of 6.8. What is the ratio of acetic acid to acetate in solution?

A benzoic acid buffer at pH 6.19 was generated from 0.007 M C₆H₅COOH and 0.7 M C₆H₅COO^–. Based on this what is the pK_a of benzoic acid?

A buffered solution containing 0.5 M acetic acid and 0.05 M acetate has a pH of 3.4. What is the pKa of acetic acid?