Acids and Bases
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CHXI07:EQUILIBRIUM

314796 At \(-50^{\circ} \mathrm{C}\), the self-ionisation constant (ionic product) of \(\mathrm{NH}_{3}\) is \({{\text{K}}_{{\text{N}}{{\text{H}}_{\text{3}}}}}\)=\(\left[ {{\text{NH}}_{\text{4}}^{\text{ + }}} \right]\left[ {{\text{NH}}_{\text{2}}^{\text{ - }}} \right]{\text{ = 1}}{{\text{0}}^{{\text{ - 30}}}}{{\text{M}}^{\text{2}}}\) . How many amide ions are present per \(\mathrm{mm}^{3}\) of pure liquid ammonia?

1 \({\rm{600}}\,\,\,{\rm{ions/m}}{{\rm{m}}^{\rm{3}}}\)
2 \({\text{6}} \times {\text{1}}{{\text{0}}^{\text{6}}}{\text{ ions/m}}{{\text{m}}^{\text{3}}}\)
3 \({\text{6}} \times {\text{1}}{{\text{0}}^{\text{4}}}{\text{ ions/m}}{{\text{m}}^{\text{3}}}\)
4 \({\rm{60}}{\mkern 1mu} \) \({\rm{ions}}\,\)\({\rm{m}}{{\rm{m}}^{\rm{3}}}\)
CHXI07:EQUILIBRIUM

314797 The ionisation constant of dimethylamine is \(5.4 \times 10^{-4}\). Calculate percentage ionisation of \({\text{0}}{\text{.02}}\,\,{\text{M}}\) solution in \({\text{0}}{\text{.1}}\,\,{\text{M NaOH}}\)?

1 \({\text{0}}{\text{.54}}\)
2 \(5.4 \times 10^{-3}\)
3 \(5.4 \times 10^{-2}\)
4 \({\text{0}}{\text{.054}}\)
CHXI07:EQUILIBRIUM

314798 The degree of ionisation of \(0.05{\text{M}}\,\,{\text{N}}{{\text{H}}_3}\) at \(25^{\circ} \mathrm{C}\) in a solution of \(\mathrm{pH}=11\left(\mathrm{~K}_{\mathrm{b}}=1.76 \times 10^{-5}\right)\) is

1 0.0173
2 0.173
3 1.73
4 17.3
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CHXI07:EQUILIBRIUM

314796 At \(-50^{\circ} \mathrm{C}\), the self-ionisation constant (ionic product) of \(\mathrm{NH}_{3}\) is \({{\text{K}}_{{\text{N}}{{\text{H}}_{\text{3}}}}}\)=\(\left[ {{\text{NH}}_{\text{4}}^{\text{ + }}} \right]\left[ {{\text{NH}}_{\text{2}}^{\text{ - }}} \right]{\text{ = 1}}{{\text{0}}^{{\text{ - 30}}}}{{\text{M}}^{\text{2}}}\) . How many amide ions are present per \(\mathrm{mm}^{3}\) of pure liquid ammonia?

1 \({\rm{600}}\,\,\,{\rm{ions/m}}{{\rm{m}}^{\rm{3}}}\)
2 \({\text{6}} \times {\text{1}}{{\text{0}}^{\text{6}}}{\text{ ions/m}}{{\text{m}}^{\text{3}}}\)
3 \({\text{6}} \times {\text{1}}{{\text{0}}^{\text{4}}}{\text{ ions/m}}{{\text{m}}^{\text{3}}}\)
4 \({\rm{60}}{\mkern 1mu} \) \({\rm{ions}}\,\)\({\rm{m}}{{\rm{m}}^{\rm{3}}}\)
CHXI07:EQUILIBRIUM

314797 The ionisation constant of dimethylamine is \(5.4 \times 10^{-4}\). Calculate percentage ionisation of \({\text{0}}{\text{.02}}\,\,{\text{M}}\) solution in \({\text{0}}{\text{.1}}\,\,{\text{M NaOH}}\)?

1 \({\text{0}}{\text{.54}}\)
2 \(5.4 \times 10^{-3}\)
3 \(5.4 \times 10^{-2}\)
4 \({\text{0}}{\text{.054}}\)
CHXI07:EQUILIBRIUM

314798 The degree of ionisation of \(0.05{\text{M}}\,\,{\text{N}}{{\text{H}}_3}\) at \(25^{\circ} \mathrm{C}\) in a solution of \(\mathrm{pH}=11\left(\mathrm{~K}_{\mathrm{b}}=1.76 \times 10^{-5}\right)\) is

1 0.0173
2 0.173
3 1.73
4 17.3
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CHXI07:EQUILIBRIUM

314796 At \(-50^{\circ} \mathrm{C}\), the self-ionisation constant (ionic product) of \(\mathrm{NH}_{3}\) is \({{\text{K}}_{{\text{N}}{{\text{H}}_{\text{3}}}}}\)=\(\left[ {{\text{NH}}_{\text{4}}^{\text{ + }}} \right]\left[ {{\text{NH}}_{\text{2}}^{\text{ - }}} \right]{\text{ = 1}}{{\text{0}}^{{\text{ - 30}}}}{{\text{M}}^{\text{2}}}\) . How many amide ions are present per \(\mathrm{mm}^{3}\) of pure liquid ammonia?

1 \({\rm{600}}\,\,\,{\rm{ions/m}}{{\rm{m}}^{\rm{3}}}\)
2 \({\text{6}} \times {\text{1}}{{\text{0}}^{\text{6}}}{\text{ ions/m}}{{\text{m}}^{\text{3}}}\)
3 \({\text{6}} \times {\text{1}}{{\text{0}}^{\text{4}}}{\text{ ions/m}}{{\text{m}}^{\text{3}}}\)
4 \({\rm{60}}{\mkern 1mu} \) \({\rm{ions}}\,\)\({\rm{m}}{{\rm{m}}^{\rm{3}}}\)
CHXI07:EQUILIBRIUM

314797 The ionisation constant of dimethylamine is \(5.4 \times 10^{-4}\). Calculate percentage ionisation of \({\text{0}}{\text{.02}}\,\,{\text{M}}\) solution in \({\text{0}}{\text{.1}}\,\,{\text{M NaOH}}\)?

1 \({\text{0}}{\text{.54}}\)
2 \(5.4 \times 10^{-3}\)
3 \(5.4 \times 10^{-2}\)
4 \({\text{0}}{\text{.054}}\)
CHXI07:EQUILIBRIUM

314798 The degree of ionisation of \(0.05{\text{M}}\,\,{\text{N}}{{\text{H}}_3}\) at \(25^{\circ} \mathrm{C}\) in a solution of \(\mathrm{pH}=11\left(\mathrm{~K}_{\mathrm{b}}=1.76 \times 10^{-5}\right)\) is

1 0.0173
2 0.173
3 1.73
4 17.3
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