Answer to Question #23670 in Chemistry for kyle

Question

(A) What is the system that is buffered?
The system being buffered is Vitamin C also known as Ascorbic Acid.
(B) What is the pH of the system?
3 (5% sol.)
(C) What compounds are responsible for the buffered system?
(D) What benefit does being at this pH serve?
Creating an ascorbate also makes naturally acidic Vitamin C buffered, or pH neutral. This is important for people who have acidic systems and generally makes the vitamin easier to assimilate into the system
(E) How could this system be shifted?
(F) What happens if the pH is shifted 1 pH unit either way (acidic or basic)?


I been stuck on C, E and F

Answer 1

(С) ascorbic acid / sodium ascorbate
(E) The system can be shifted:
a) the addition of ascorbic acid (pH drop)
b) the addition of salt (pH rise)
(F) If you exceed a critical amount of acid or alkali, the buffer is destroyed!