Question

Which of the following is a buffer solution?
(1) 100 ml 0.1 MCH,COOH + 100 ml, 0.05M NaOH
(2) 200 ml 0.1 MNH,OH + 200 ml, 0.08M HCI
(3) 300 ml 0.1 M NaOH + 500 ml.0.1MCH,COOH
(4) All of these​

Answer 1

Answer:

4) All of these are buffer solution