Question

1.0 L of 0.01 M $N{H}_3$ solution is taken to which the following quantities of 1.0 M HCL is added.
$p{K}_b\left(N{H}_3\right)=4.74)$. Match the following.
Column I : Volume of NaOH added
Column II : pOH

Answer 1

When 2.0 mL of 1.0 M HCL is added to 1.0 L of 0.01 M $N{H}_3$ solution, the pOH of the solution is 4.14.
When 5.0 mL of 1.0 M HCL is added to 1.0 L of 0.01 M $N{H}_3$ solution, the pOH of the solution is 4.74.
When 10.0 mL of 1.0 M HCL is added to 1.0 L of 0.01 M $N{H}_3$ solution, the pOH of the solution is 8.37.
When 11.0 mL of 1.0 M HCL is added to 1.0 L of 0.01 M $N{H}_3$ solution, the pOH of the solution is 11.0.