Which of the following solutions represent a buffer system? Select all that apply.

Answer
A.
H2CO3 and HCO3-
B.
HNO2 and NaNO2
C.
NH4Br
D.
Na2SO4
E.
HClO4 and NaClO4
F.
CH3COOH

1 answer

A buffer is made by using a mixture of a weak acid and its conjugate or a weak base and it's cnjugate OR a mixture that will produce such.
A yes
B ?
C no
D no
E ?
The ? are left for you.