314531 \(50 \mathrm{~mL}\) of \({\text{0}}{\text{.2}}\,\,{\text{M}}\) ammonia solution is treated with \(25 \mathrm{~mL}\) of \(0.2{\rm{M}}\,\,{\rm{HCl}}\). If \({\rm{p}}{{\rm{K}}_{\rm{b}}}\) of ammonia solution is \({\text{4}}{\text{.75,}}\) the \(\mathrm{pH}\) of the mixture will be

314532 \(20 \mathrm{~mL}\) of \({\text{0}}{\text{.1 M }}{{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}\) solution is added to 30 \(\mathrm{mL}\) of \({\text{0}}{\text{.2 M N}}{{\text{H}}_{\text{4}}}{\text{OH}}\) solution. The \(\mathrm{pH}\) of the resultant mixture is \(\left[\mathrm{pK}_{\mathrm{b}}\right.\) of \(\left.\mathrm{NH}_{4} \mathrm{OH}=4.7\right]\)

314533 How much of 0.3 \({\text{N}}{{\text{H}}_{\text{4}}}{\text{OH}}\) Should be mixed with \(30 \mathrm{~mL}\) of \({\text{0}}{\text{.2}}\,\,{\text{M}}\) solution of \(\mathrm{NH}_{4} \mathrm{Cl}\) to give buffer solution of \({\rm{pH}}\) 8.65? \(\left( {{\rm{p}}{{\rm{K}}_{\rm{b}}}{\rm{ = 4}}{\rm{.75}}} \right)\)

314534 Calculate \(\mathrm{pH}\) of the buffer solution containing 0.15 moles of \(\mathrm{NH}_{4} \mathrm{OH}\) and 0.25 moles of \(\mathrm{NH}_{4} \mathrm{Cl}, \mathrm{K}_{\mathrm{b}}\) for \(\mathrm{NH}_{4} \mathrm{OH}\) is \(1.8 \times 10^{-5}\)

314531 \(50 \mathrm{~mL}\) of \({\text{0}}{\text{.2}}\,\,{\text{M}}\) ammonia solution is treated with \(25 \mathrm{~mL}\) of \(0.2{\rm{M}}\,\,{\rm{HCl}}\). If \({\rm{p}}{{\rm{K}}_{\rm{b}}}\) of ammonia solution is \({\text{4}}{\text{.75,}}\) the \(\mathrm{pH}\) of the mixture will be

314532 \(20 \mathrm{~mL}\) of \({\text{0}}{\text{.1 M }}{{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}\) solution is added to 30 \(\mathrm{mL}\) of \({\text{0}}{\text{.2 M N}}{{\text{H}}_{\text{4}}}{\text{OH}}\) solution. The \(\mathrm{pH}\) of the resultant mixture is \(\left[\mathrm{pK}_{\mathrm{b}}\right.\) of \(\left.\mathrm{NH}_{4} \mathrm{OH}=4.7\right]\)

314533 How much of 0.3 \({\text{N}}{{\text{H}}_{\text{4}}}{\text{OH}}\) Should be mixed with \(30 \mathrm{~mL}\) of \({\text{0}}{\text{.2}}\,\,{\text{M}}\) solution of \(\mathrm{NH}_{4} \mathrm{Cl}\) to give buffer solution of \({\rm{pH}}\) 8.65? \(\left( {{\rm{p}}{{\rm{K}}_{\rm{b}}}{\rm{ = 4}}{\rm{.75}}} \right)\)

314534 Calculate \(\mathrm{pH}\) of the buffer solution containing 0.15 moles of \(\mathrm{NH}_{4} \mathrm{OH}\) and 0.25 moles of \(\mathrm{NH}_{4} \mathrm{Cl}, \mathrm{K}_{\mathrm{b}}\) for \(\mathrm{NH}_{4} \mathrm{OH}\) is \(1.8 \times 10^{-5}\)

314531 \(50 \mathrm{~mL}\) of \({\text{0}}{\text{.2}}\,\,{\text{M}}\) ammonia solution is treated with \(25 \mathrm{~mL}\) of \(0.2{\rm{M}}\,\,{\rm{HCl}}\). If \({\rm{p}}{{\rm{K}}_{\rm{b}}}\) of ammonia solution is \({\text{4}}{\text{.75,}}\) the \(\mathrm{pH}\) of the mixture will be

314532 \(20 \mathrm{~mL}\) of \({\text{0}}{\text{.1 M }}{{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}\) solution is added to 30 \(\mathrm{mL}\) of \({\text{0}}{\text{.2 M N}}{{\text{H}}_{\text{4}}}{\text{OH}}\) solution. The \(\mathrm{pH}\) of the resultant mixture is \(\left[\mathrm{pK}_{\mathrm{b}}\right.\) of \(\left.\mathrm{NH}_{4} \mathrm{OH}=4.7\right]\)

314533 How much of 0.3 \({\text{N}}{{\text{H}}_{\text{4}}}{\text{OH}}\) Should be mixed with \(30 \mathrm{~mL}\) of \({\text{0}}{\text{.2}}\,\,{\text{M}}\) solution of \(\mathrm{NH}_{4} \mathrm{Cl}\) to give buffer solution of \({\rm{pH}}\) 8.65? \(\left( {{\rm{p}}{{\rm{K}}_{\rm{b}}}{\rm{ = 4}}{\rm{.75}}} \right)\)

314534 Calculate \(\mathrm{pH}\) of the buffer solution containing 0.15 moles of \(\mathrm{NH}_{4} \mathrm{OH}\) and 0.25 moles of \(\mathrm{NH}_{4} \mathrm{Cl}, \mathrm{K}_{\mathrm{b}}\) for \(\mathrm{NH}_{4} \mathrm{OH}\) is \(1.8 \times 10^{-5}\)

314531 \(50 \mathrm{~mL}\) of \({\text{0}}{\text{.2}}\,\,{\text{M}}\) ammonia solution is treated with \(25 \mathrm{~mL}\) of \(0.2{\rm{M}}\,\,{\rm{HCl}}\). If \({\rm{p}}{{\rm{K}}_{\rm{b}}}\) of ammonia solution is \({\text{4}}{\text{.75,}}\) the \(\mathrm{pH}\) of the mixture will be

314532 \(20 \mathrm{~mL}\) of \({\text{0}}{\text{.1 M }}{{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}\) solution is added to 30 \(\mathrm{mL}\) of \({\text{0}}{\text{.2 M N}}{{\text{H}}_{\text{4}}}{\text{OH}}\) solution. The \(\mathrm{pH}\) of the resultant mixture is \(\left[\mathrm{pK}_{\mathrm{b}}\right.\) of \(\left.\mathrm{NH}_{4} \mathrm{OH}=4.7\right]\)

314533 How much of 0.3 \({\text{N}}{{\text{H}}_{\text{4}}}{\text{OH}}\) Should be mixed with \(30 \mathrm{~mL}\) of \({\text{0}}{\text{.2}}\,\,{\text{M}}\) solution of \(\mathrm{NH}_{4} \mathrm{Cl}\) to give buffer solution of \({\rm{pH}}\) 8.65? \(\left( {{\rm{p}}{{\rm{K}}_{\rm{b}}}{\rm{ = 4}}{\rm{.75}}} \right)\)

314534 Calculate \(\mathrm{pH}\) of the buffer solution containing 0.15 moles of \(\mathrm{NH}_{4} \mathrm{OH}\) and 0.25 moles of \(\mathrm{NH}_{4} \mathrm{Cl}, \mathrm{K}_{\mathrm{b}}\) for \(\mathrm{NH}_{4} \mathrm{OH}\) is \(1.8 \times 10^{-5}\)