The pH of the solution resulted when 150 mL of 0.1 M ammonia solution is titrated with 50 mL of 0.1 M HCl [ pK_b ( NH_3)=4.7] is \ \ \ \. (Nearest…

The pH of the solution resulted when $\displaystyle 150$ mL of $\displaystyle 0.1$ M ammonia solution is titrated with $\displaystyle 50$ mL of $\displaystyle 0.1 \mathrm{M} \mathrm{HCl}\left[\mathrm{pK}_{\mathrm{b}}\left(\mathrm{NH}_3\right)=4.7\right]$ is \_\_\_\_. (Nearest integer) $$\left[\log _{10} 2=0.30\right] $$