40 ml of `0.1` M ammonia is mixed with 20 ml of `0.1 M HCI`. What is the pH of the mixture ? (`pK_(b)` of ammonia solution is `4.74.`)

40 ml of 0.1 M ammonia is mixed with 20 ml of 0.1 M HCl . What is the pH of the mixture ? ( pK_(b) of ammonia solution is 4.74. )

60 mL of 0.3 M KOH and 40 mL of 0.2 M HCl are mixed. What is the pH of the mixture ?

20 mL of 0.1N HCI is mixed with 20 ml of 0.1N KOH . The pH of the solution would be

20 mL of 0.1N HCI is mixed with 20 ml of 0.1N KOH . The pH of the solution would be

25 mL of 0.1 (N) NaOH is mixed with 50 mL of 0.1 (N) CH_(3)CO OH . Calculate the pH of the resulting mixture [pK_(a) of CH_(3) COOH is 4.74]