314535 The number of moles of \(\mathrm {NH}_{4} \mathrm{Cl}\) that should be added to one litre of \({\rm{1M}}\,\,{\rm{N}}{{\rm{H}}_{\rm{4}}}{\rm{OH}}\) to prepare buffer solution with \(\mathrm{pH}=9\) is
\(\left( {{{\text{K}}_{\text{b}}}{\text{ = 2 }} \times {\text{1}}{{\text{0}}^{{\text{ - 5}}}}} \right.{\text{,take }}\left. {{\text{log 2 = 0}}{\text{.3}}} \right)\)

314536 Calculate the \(\mathrm{pH}\) of a solution formed by mixing
\({\text{0}}{\text{.2 M N}}{{\text{H}}_{\text{4}}}{\text{Cl and 0}}{\text{.1 M N}}{{\text{H}}_{\text{3.}}}{\text{ The p}}{{\text{K}}_{\text{b}}}{\text{ of}}\) \({\rm{ammonia }}\) is 4.75.

314537 A buffer solution is prepared in which the concentration of \(\mathrm{NH}_{3}\) is \(0.30 \mathrm{M}\) and the concentration of \(\mathrm{NH}_{4}^{+}\)is \(0.20 \mathrm{M}\). If
\(\mathrm{K}_{\mathrm{b}}\) for \(\mathrm{NH}_{3}\) is \(1.8 \times 10^{-5}\), what is the \(\mathrm{pH}\) of the solution?

314538 The concentration of sodium acetate which should be added to 0.1 M solution of acetic acid \({\mathrm{\left[\mathrm{pK}_{\mathrm{a}}=4.7\right]}}\) to give a solution of \({\mathrm{\mathrm{pH}=5.7}}\) is ____ M.

314535 The number of moles of \(\mathrm {NH}_{4} \mathrm{Cl}\) that should be added to one litre of \({\rm{1M}}\,\,{\rm{N}}{{\rm{H}}_{\rm{4}}}{\rm{OH}}\) to prepare buffer solution with \(\mathrm{pH}=9\) is
\(\left( {{{\text{K}}_{\text{b}}}{\text{ = 2 }} \times {\text{1}}{{\text{0}}^{{\text{ - 5}}}}} \right.{\text{,take }}\left. {{\text{log 2 = 0}}{\text{.3}}} \right)\)

314536 Calculate the \(\mathrm{pH}\) of a solution formed by mixing
\({\text{0}}{\text{.2 M N}}{{\text{H}}_{\text{4}}}{\text{Cl and 0}}{\text{.1 M N}}{{\text{H}}_{\text{3.}}}{\text{ The p}}{{\text{K}}_{\text{b}}}{\text{ of}}\) \({\rm{ammonia }}\) is 4.75.

314537 A buffer solution is prepared in which the concentration of \(\mathrm{NH}_{3}\) is \(0.30 \mathrm{M}\) and the concentration of \(\mathrm{NH}_{4}^{+}\)is \(0.20 \mathrm{M}\). If
\(\mathrm{K}_{\mathrm{b}}\) for \(\mathrm{NH}_{3}\) is \(1.8 \times 10^{-5}\), what is the \(\mathrm{pH}\) of the solution?

314538 The concentration of sodium acetate which should be added to 0.1 M solution of acetic acid \({\mathrm{\left[\mathrm{pK}_{\mathrm{a}}=4.7\right]}}\) to give a solution of \({\mathrm{\mathrm{pH}=5.7}}\) is ____ M.

314535 The number of moles of \(\mathrm {NH}_{4} \mathrm{Cl}\) that should be added to one litre of \({\rm{1M}}\,\,{\rm{N}}{{\rm{H}}_{\rm{4}}}{\rm{OH}}\) to prepare buffer solution with \(\mathrm{pH}=9\) is
\(\left( {{{\text{K}}_{\text{b}}}{\text{ = 2 }} \times {\text{1}}{{\text{0}}^{{\text{ - 5}}}}} \right.{\text{,take }}\left. {{\text{log 2 = 0}}{\text{.3}}} \right)\)

314536 Calculate the \(\mathrm{pH}\) of a solution formed by mixing
\({\text{0}}{\text{.2 M N}}{{\text{H}}_{\text{4}}}{\text{Cl and 0}}{\text{.1 M N}}{{\text{H}}_{\text{3.}}}{\text{ The p}}{{\text{K}}_{\text{b}}}{\text{ of}}\) \({\rm{ammonia }}\) is 4.75.

314537 A buffer solution is prepared in which the concentration of \(\mathrm{NH}_{3}\) is \(0.30 \mathrm{M}\) and the concentration of \(\mathrm{NH}_{4}^{+}\)is \(0.20 \mathrm{M}\). If
\(\mathrm{K}_{\mathrm{b}}\) for \(\mathrm{NH}_{3}\) is \(1.8 \times 10^{-5}\), what is the \(\mathrm{pH}\) of the solution?

314538 The concentration of sodium acetate which should be added to 0.1 M solution of acetic acid \({\mathrm{\left[\mathrm{pK}_{\mathrm{a}}=4.7\right]}}\) to give a solution of \({\mathrm{\mathrm{pH}=5.7}}\) is ____ M.

314535 The number of moles of \(\mathrm {NH}_{4} \mathrm{Cl}\) that should be added to one litre of \({\rm{1M}}\,\,{\rm{N}}{{\rm{H}}_{\rm{4}}}{\rm{OH}}\) to prepare buffer solution with \(\mathrm{pH}=9\) is
\(\left( {{{\text{K}}_{\text{b}}}{\text{ = 2 }} \times {\text{1}}{{\text{0}}^{{\text{ - 5}}}}} \right.{\text{,take }}\left. {{\text{log 2 = 0}}{\text{.3}}} \right)\)

314536 Calculate the \(\mathrm{pH}\) of a solution formed by mixing
\({\text{0}}{\text{.2 M N}}{{\text{H}}_{\text{4}}}{\text{Cl and 0}}{\text{.1 M N}}{{\text{H}}_{\text{3.}}}{\text{ The p}}{{\text{K}}_{\text{b}}}{\text{ of}}\) \({\rm{ammonia }}\) is 4.75.

314537 A buffer solution is prepared in which the concentration of \(\mathrm{NH}_{3}\) is \(0.30 \mathrm{M}\) and the concentration of \(\mathrm{NH}_{4}^{+}\)is \(0.20 \mathrm{M}\). If
\(\mathrm{K}_{\mathrm{b}}\) for \(\mathrm{NH}_{3}\) is \(1.8 \times 10^{-5}\), what is the \(\mathrm{pH}\) of the solution?

314538 The concentration of sodium acetate which should be added to 0.1 M solution of acetic acid \({\mathrm{\left[\mathrm{pK}_{\mathrm{a}}=4.7\right]}}\) to give a solution of \({\mathrm{\mathrm{pH}=5.7}}\) is ____ M.