(Solved): An aqueous solution contains 0.22M ammonia. One liter of this solution could be converted i ...

An aqueous solution contains $0.22\mathrm{M}$ ammonia. One liter of this solution could be converted into a buffer by the addition of: (Assume that the volume remains constant as each substance is added.) (Select all that apply.) $\begin{array}{l}0.23\mathrm{mol}\mathrm{HCl}\\ 0.11\mathrm{mol}\mathrm{NaOH}\\ 0.23\mathrm{mol}{\mathrm{NH}}_4{\mathrm{ClO}}_4\\ 0.11\mathrm{mol}\mathrm{HCl}\\ 0.22\mathrm{mol}\mathrm{Ca}{\left({\mathrm{ClO}}_4\right)}_2\end{array}$ An aqueous solution contains $0.34\mathrm{M}$ sodium fluoride. One liter of this solution could be converted into a buffer by the addition of: (Assume that the volume remains constant as each substance is added.) (Select all that apply.) $\begin{array}{l}0.16\mathrm{mol}\mathrm{Ca}(\mathrm{OH}{)}_2\\ 0.16\mathrm{mol}\mathrm{HBr}\\ 0.33\mathrm{mol}\mathrm{HF}\\ 0.34\mathrm{mol}\mathrm{HBr}\\ 0.33\mathrm{mol}\mathrm{NaI}\end{array}$