Abnormal Molar Masses and Van't Hoff Factor
CHXII02:SOLUTIONS

319007 \(\mathrm{KBr}\) is \(80 \%\) dissociated in aqueous solution of 0.5 m concentration (given, \(\mathrm{K}_{\mathrm{f}}\) for water \({\text{ = 1}}{\text{.86}}\,{\text{K}}\,\,{\text{Kg }}\,{\text{mo}}{{\text{l}}^{{\text{ - 1}}}}\) ). The solution freezes at:

1 \(271.326 \mathrm{~K}\)
2 \(272 \mathrm{~K}\)
3 \(270.5 \mathrm{~K}\)
4 \(268.5 \mathrm{~K}\)
CHXII02:SOLUTIONS

319008 Osmotic pressure of 0.1M aqueous solution of \({\rm{MgC}}{{\rm{l}}_{\rm{2}}}\) at 300K is 4.92 atm. What will be the percentage ionisation of the salt?

1 \(79\% \)
2 \(59\% \)
3 \(49\% \)
4 \(69\% \)
CHXII02:SOLUTIONS

319009 Van’t Hoff factor of centimolal solution of \({{\rm{K}}_{\rm{3}}}\left[ {{\rm{Fe}}{{\left( {{\rm{CN}}} \right)}_{\rm{6}}}} \right]\) is 3.333. Calculate the percent dissociation of \({{\rm{K}}_{\rm{3}}}\left[ {{\rm{Fe}}{{\left( {{\rm{CN}}} \right)}_{\rm{6}}}} \right]\).

1 33.33
2 0.78
3 78
4 23.33
CHXII02:SOLUTIONS

319010 Solutions A, B, C and D are respectively 0.2 M urea, 0.10 M NaCl, 0.05 M \({\rm{BaC}}{{\rm{l}}_{\rm{2}}}\) and 0.05 M \({\rm{AlC}}{{\rm{l}}_{\rm{3}}}\). All solutions are isotonic with each other except

1 B
2 A
3 D
4 C
CHXII02:SOLUTIONS

319011 A 0.0020 m aqueous solution in an ionic compound \({\rm{Co}}{\left( {{\rm{N}}{{\rm{H}}_{\rm{3}}}} \right)_{\rm{5}}}\left( {{\rm{N}}{{\rm{O}}_{\rm{2}}}} \right){\rm{Cl}}\) freezes at \({\rm{ - 0}}{\rm{.0073}}{{\rm{2}}^{\rm{^\circ }}}{\rm{C}}\). Number of moles of ions which 1 mol of ionic compound produces on being dissolved in water will be (\({{\rm{K}}_{\rm{f}}}{\rm{ = 1}}{\rm{.86^\circ }}\,{\rm{C/m}}\))

1 3
2 2
3 1
4 4
CHXII02:SOLUTIONS

319007 \(\mathrm{KBr}\) is \(80 \%\) dissociated in aqueous solution of 0.5 m concentration (given, \(\mathrm{K}_{\mathrm{f}}\) for water \({\text{ = 1}}{\text{.86}}\,{\text{K}}\,\,{\text{Kg }}\,{\text{mo}}{{\text{l}}^{{\text{ - 1}}}}\) ). The solution freezes at:

1 \(271.326 \mathrm{~K}\)
2 \(272 \mathrm{~K}\)
3 \(270.5 \mathrm{~K}\)
4 \(268.5 \mathrm{~K}\)
CHXII02:SOLUTIONS

319008 Osmotic pressure of 0.1M aqueous solution of \({\rm{MgC}}{{\rm{l}}_{\rm{2}}}\) at 300K is 4.92 atm. What will be the percentage ionisation of the salt?

1 \(79\% \)
2 \(59\% \)
3 \(49\% \)
4 \(69\% \)
CHXII02:SOLUTIONS

319009 Van’t Hoff factor of centimolal solution of \({{\rm{K}}_{\rm{3}}}\left[ {{\rm{Fe}}{{\left( {{\rm{CN}}} \right)}_{\rm{6}}}} \right]\) is 3.333. Calculate the percent dissociation of \({{\rm{K}}_{\rm{3}}}\left[ {{\rm{Fe}}{{\left( {{\rm{CN}}} \right)}_{\rm{6}}}} \right]\).

1 33.33
2 0.78
3 78
4 23.33
CHXII02:SOLUTIONS

319010 Solutions A, B, C and D are respectively 0.2 M urea, 0.10 M NaCl, 0.05 M \({\rm{BaC}}{{\rm{l}}_{\rm{2}}}\) and 0.05 M \({\rm{AlC}}{{\rm{l}}_{\rm{3}}}\). All solutions are isotonic with each other except

1 B
2 A
3 D
4 C
CHXII02:SOLUTIONS

319011 A 0.0020 m aqueous solution in an ionic compound \({\rm{Co}}{\left( {{\rm{N}}{{\rm{H}}_{\rm{3}}}} \right)_{\rm{5}}}\left( {{\rm{N}}{{\rm{O}}_{\rm{2}}}} \right){\rm{Cl}}\) freezes at \({\rm{ - 0}}{\rm{.0073}}{{\rm{2}}^{\rm{^\circ }}}{\rm{C}}\). Number of moles of ions which 1 mol of ionic compound produces on being dissolved in water will be (\({{\rm{K}}_{\rm{f}}}{\rm{ = 1}}{\rm{.86^\circ }}\,{\rm{C/m}}\))

1 3
2 2
3 1
4 4
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
CHXII02:SOLUTIONS

319007 \(\mathrm{KBr}\) is \(80 \%\) dissociated in aqueous solution of 0.5 m concentration (given, \(\mathrm{K}_{\mathrm{f}}\) for water \({\text{ = 1}}{\text{.86}}\,{\text{K}}\,\,{\text{Kg }}\,{\text{mo}}{{\text{l}}^{{\text{ - 1}}}}\) ). The solution freezes at:

1 \(271.326 \mathrm{~K}\)
2 \(272 \mathrm{~K}\)
3 \(270.5 \mathrm{~K}\)
4 \(268.5 \mathrm{~K}\)
CHXII02:SOLUTIONS

319008 Osmotic pressure of 0.1M aqueous solution of \({\rm{MgC}}{{\rm{l}}_{\rm{2}}}\) at 300K is 4.92 atm. What will be the percentage ionisation of the salt?

1 \(79\% \)
2 \(59\% \)
3 \(49\% \)
4 \(69\% \)
CHXII02:SOLUTIONS

319009 Van’t Hoff factor of centimolal solution of \({{\rm{K}}_{\rm{3}}}\left[ {{\rm{Fe}}{{\left( {{\rm{CN}}} \right)}_{\rm{6}}}} \right]\) is 3.333. Calculate the percent dissociation of \({{\rm{K}}_{\rm{3}}}\left[ {{\rm{Fe}}{{\left( {{\rm{CN}}} \right)}_{\rm{6}}}} \right]\).

1 33.33
2 0.78
3 78
4 23.33
CHXII02:SOLUTIONS

319010 Solutions A, B, C and D are respectively 0.2 M urea, 0.10 M NaCl, 0.05 M \({\rm{BaC}}{{\rm{l}}_{\rm{2}}}\) and 0.05 M \({\rm{AlC}}{{\rm{l}}_{\rm{3}}}\). All solutions are isotonic with each other except

1 B
2 A
3 D
4 C
CHXII02:SOLUTIONS

319011 A 0.0020 m aqueous solution in an ionic compound \({\rm{Co}}{\left( {{\rm{N}}{{\rm{H}}_{\rm{3}}}} \right)_{\rm{5}}}\left( {{\rm{N}}{{\rm{O}}_{\rm{2}}}} \right){\rm{Cl}}\) freezes at \({\rm{ - 0}}{\rm{.0073}}{{\rm{2}}^{\rm{^\circ }}}{\rm{C}}\). Number of moles of ions which 1 mol of ionic compound produces on being dissolved in water will be (\({{\rm{K}}_{\rm{f}}}{\rm{ = 1}}{\rm{.86^\circ }}\,{\rm{C/m}}\))

1 3
2 2
3 1
4 4
CHXII02:SOLUTIONS

319007 \(\mathrm{KBr}\) is \(80 \%\) dissociated in aqueous solution of 0.5 m concentration (given, \(\mathrm{K}_{\mathrm{f}}\) for water \({\text{ = 1}}{\text{.86}}\,{\text{K}}\,\,{\text{Kg }}\,{\text{mo}}{{\text{l}}^{{\text{ - 1}}}}\) ). The solution freezes at:

1 \(271.326 \mathrm{~K}\)
2 \(272 \mathrm{~K}\)
3 \(270.5 \mathrm{~K}\)
4 \(268.5 \mathrm{~K}\)
CHXII02:SOLUTIONS

319008 Osmotic pressure of 0.1M aqueous solution of \({\rm{MgC}}{{\rm{l}}_{\rm{2}}}\) at 300K is 4.92 atm. What will be the percentage ionisation of the salt?

1 \(79\% \)
2 \(59\% \)
3 \(49\% \)
4 \(69\% \)
CHXII02:SOLUTIONS

319009 Van’t Hoff factor of centimolal solution of \({{\rm{K}}_{\rm{3}}}\left[ {{\rm{Fe}}{{\left( {{\rm{CN}}} \right)}_{\rm{6}}}} \right]\) is 3.333. Calculate the percent dissociation of \({{\rm{K}}_{\rm{3}}}\left[ {{\rm{Fe}}{{\left( {{\rm{CN}}} \right)}_{\rm{6}}}} \right]\).

1 33.33
2 0.78
3 78
4 23.33
CHXII02:SOLUTIONS

319010 Solutions A, B, C and D are respectively 0.2 M urea, 0.10 M NaCl, 0.05 M \({\rm{BaC}}{{\rm{l}}_{\rm{2}}}\) and 0.05 M \({\rm{AlC}}{{\rm{l}}_{\rm{3}}}\). All solutions are isotonic with each other except

1 B
2 A
3 D
4 C
CHXII02:SOLUTIONS

319011 A 0.0020 m aqueous solution in an ionic compound \({\rm{Co}}{\left( {{\rm{N}}{{\rm{H}}_{\rm{3}}}} \right)_{\rm{5}}}\left( {{\rm{N}}{{\rm{O}}_{\rm{2}}}} \right){\rm{Cl}}\) freezes at \({\rm{ - 0}}{\rm{.0073}}{{\rm{2}}^{\rm{^\circ }}}{\rm{C}}\). Number of moles of ions which 1 mol of ionic compound produces on being dissolved in water will be (\({{\rm{K}}_{\rm{f}}}{\rm{ = 1}}{\rm{.86^\circ }}\,{\rm{C/m}}\))

1 3
2 2
3 1
4 4
CHXII02:SOLUTIONS

319007 \(\mathrm{KBr}\) is \(80 \%\) dissociated in aqueous solution of 0.5 m concentration (given, \(\mathrm{K}_{\mathrm{f}}\) for water \({\text{ = 1}}{\text{.86}}\,{\text{K}}\,\,{\text{Kg }}\,{\text{mo}}{{\text{l}}^{{\text{ - 1}}}}\) ). The solution freezes at:

1 \(271.326 \mathrm{~K}\)
2 \(272 \mathrm{~K}\)
3 \(270.5 \mathrm{~K}\)
4 \(268.5 \mathrm{~K}\)
CHXII02:SOLUTIONS

319008 Osmotic pressure of 0.1M aqueous solution of \({\rm{MgC}}{{\rm{l}}_{\rm{2}}}\) at 300K is 4.92 atm. What will be the percentage ionisation of the salt?

1 \(79\% \)
2 \(59\% \)
3 \(49\% \)
4 \(69\% \)
CHXII02:SOLUTIONS

319009 Van’t Hoff factor of centimolal solution of \({{\rm{K}}_{\rm{3}}}\left[ {{\rm{Fe}}{{\left( {{\rm{CN}}} \right)}_{\rm{6}}}} \right]\) is 3.333. Calculate the percent dissociation of \({{\rm{K}}_{\rm{3}}}\left[ {{\rm{Fe}}{{\left( {{\rm{CN}}} \right)}_{\rm{6}}}} \right]\).

1 33.33
2 0.78
3 78
4 23.33
CHXII02:SOLUTIONS

319010 Solutions A, B, C and D are respectively 0.2 M urea, 0.10 M NaCl, 0.05 M \({\rm{BaC}}{{\rm{l}}_{\rm{2}}}\) and 0.05 M \({\rm{AlC}}{{\rm{l}}_{\rm{3}}}\). All solutions are isotonic with each other except

1 B
2 A
3 D
4 C
CHXII02:SOLUTIONS

319011 A 0.0020 m aqueous solution in an ionic compound \({\rm{Co}}{\left( {{\rm{N}}{{\rm{H}}_{\rm{3}}}} \right)_{\rm{5}}}\left( {{\rm{N}}{{\rm{O}}_{\rm{2}}}} \right){\rm{Cl}}\) freezes at \({\rm{ - 0}}{\rm{.0073}}{{\rm{2}}^{\rm{^\circ }}}{\rm{C}}\). Number of moles of ions which 1 mol of ionic compound produces on being dissolved in water will be (\({{\rm{K}}_{\rm{f}}}{\rm{ = 1}}{\rm{.86^\circ }}\,{\rm{C/m}}\))

1 3
2 2
3 1
4 4