Question

2. In which of the following cases pH is less than 7?
[pka (CH3COOH) = 4.74, pK (NH4OH) = 4.74]
(1) 50 ml of 0.1 M CH3CO2H + 50 ml of 0.1 M
КОН
(2) 50 ml of 0.1 M HCI + 50 ml of 0.1 M NaOH
(3) 50 ml of 0.1 M HNO3 + 50 ml of 0.1 M NH OH
(4) 50 ml of 0.1 M H2SO4 + 50 ml of 0.2 M NaOH​

Answer 1

Answer:9.5

Explanation: