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

318964 The solution from the following with highest depression in freezing point/lowest freezing point is

1 180 g of acetic acid dissolved in benzene
2 180 g of benzoic acid dissolved in benzene
3 180 g of glucose dissolved in water
4 180 g of acetic acid dissolved in water.
CHXII02:SOLUTIONS

318965 Repeated measurements of boiling points of separate solutions of 2.36 g mercurous chloride in 100 g of water produced \({\rm{\Delta }}{{\rm{T}}_{\rm{b}}}\) values in the range of 0.024 to 0.026 K. The atomic weights of mercury and chlorine are 200 and 35.5 respectively. \({{\rm{K}}_{\rm{b}}}{\rm{ = 0}}{\rm{.5}}{\mkern 1mu} {\mkern 1mu} {\rm{K}}{\mkern 1mu} {\mkern 1mu} {\rm{kg/mol}}\) for water. These data suggest that mercurous chloride functions as a/an

1 Covalent compound in aqueous medium
2 Ionic compound in aqueous medium
3 Reducing agent in aqueous medium
4 Oxidising agent in aqueous medium
CHXII02:SOLUTIONS

318966 Which of the following solutions will exhibit highest boiling point?

1 \({\rm{0}}{\rm{.01}}{\mkern 1mu} {\mkern 1mu} {\rm{M}}{\mkern 1mu} {\mkern 1mu} {\rm{N}}{{\rm{a}}_{\rm{2}}}{\rm{S}}{{\rm{O}}_{{\rm{4}}\left( {{\rm{aq}}} \right)}}\)
2 \({\rm{0}}{\rm{.01}}{\mkern 1mu} {\mkern 1mu} {\rm{M}}{\mkern 1mu} {\mkern 1mu} {\rm{KN}}{{\rm{O}}_{{\rm{3}}\left( {{\rm{aq}}} \right)}}\)
3 \({\rm{0}}{\rm{.015}}{\mkern 1mu} {\mkern 1mu} {\rm{M}}{\mkern 1mu} {\mkern 1mu} {\rm{ure}}{{\rm{a}}_{\left( {{\rm{aq}}} \right)}}\)
4 \({\rm{0}}{\rm{.015}}{\mkern 1mu} {\mkern 1mu} {\rm{M}}{\mkern 1mu} {\mkern 1mu} {\rm{glucos}}{{\rm{e}}_{\left( {{\rm{aq}}} \right)}}\)
CHXII02:SOLUTIONS

318967 In which of the following pairs of solutions will the values of the Van’t Hoff factor be the same?

1 \({\rm{0}}{\rm{.05}}\,{\rm{M}}\,\,{{\rm{K}}_{\rm{4}}}\left[ {{\rm{Fe}}{{\left( {{\rm{CN}}} \right)}_{\rm{6}}}} \right]\,\,{\rm{and}}\,\,{\rm{0}}{\rm{.10}}\,{\rm{M}}\,\,{\rm{FeS}}{{\rm{O}}_{\rm{4}}}\)
2 \({\rm{0}}{\rm{.20}}\,{\rm{M}}\,\,{\rm{NaCl}}\,\,{\rm{and}}\,\,{\rm{0}}{\rm{.10}}\,{\rm{M}}\,\,{\rm{BaC}}{{\rm{l}}_{\rm{2}}}\)
3 \({\rm{0}}.{\rm{5}}{\mkern 1mu} {\mkern 1mu} {\rm{M}}{\mkern 1mu} {\mkern 1mu} {\rm{FeS}}{{\rm{O}}{\rm{4}}}{\mkern 1mu} {\mkern 1mu} {\left( {{\rm{N}}{{\rm{H}}{\rm{4}}}} \right){\rm{2}}}{\rm{S}}{{\rm{O}}{\rm{4}}}.{\mkern 1mu} {\mkern 1mu} {\rm{6}}{{\rm{H}}{\rm{2}}}{\rm{O}}\) and
\({\rm{0}}.{\rm{02M}}{\mkern 1mu} {\mkern 1mu} {\rm{KCl}}.{\mkern 1mu} {\mkern 1mu} {\rm{MgC}}{{\rm{l}}{\rm{2}}}.{\mkern 1mu} {\mkern 1mu} {\rm{6}}{{\rm{H}}_{\rm{2}}}{\rm{O}}\)
4 All have same value
CHXII02:SOLUTIONS

318968 For a substance ‘A’ when dissolved in a solvent ‘B’ show the molecular mass corresponding to \({{\rm{A}}_{\rm{3}}}\). The Van’t Hoff factor will be

1 1
2 2
3 3
4 \(1/3\)
CHXII02:SOLUTIONS

318964 The solution from the following with highest depression in freezing point/lowest freezing point is

1 180 g of acetic acid dissolved in benzene
2 180 g of benzoic acid dissolved in benzene
3 180 g of glucose dissolved in water
4 180 g of acetic acid dissolved in water.
CHXII02:SOLUTIONS

318965 Repeated measurements of boiling points of separate solutions of 2.36 g mercurous chloride in 100 g of water produced \({\rm{\Delta }}{{\rm{T}}_{\rm{b}}}\) values in the range of 0.024 to 0.026 K. The atomic weights of mercury and chlorine are 200 and 35.5 respectively. \({{\rm{K}}_{\rm{b}}}{\rm{ = 0}}{\rm{.5}}{\mkern 1mu} {\mkern 1mu} {\rm{K}}{\mkern 1mu} {\mkern 1mu} {\rm{kg/mol}}\) for water. These data suggest that mercurous chloride functions as a/an

1 Covalent compound in aqueous medium
2 Ionic compound in aqueous medium
3 Reducing agent in aqueous medium
4 Oxidising agent in aqueous medium
CHXII02:SOLUTIONS

318966 Which of the following solutions will exhibit highest boiling point?

1 \({\rm{0}}{\rm{.01}}{\mkern 1mu} {\mkern 1mu} {\rm{M}}{\mkern 1mu} {\mkern 1mu} {\rm{N}}{{\rm{a}}_{\rm{2}}}{\rm{S}}{{\rm{O}}_{{\rm{4}}\left( {{\rm{aq}}} \right)}}\)
2 \({\rm{0}}{\rm{.01}}{\mkern 1mu} {\mkern 1mu} {\rm{M}}{\mkern 1mu} {\mkern 1mu} {\rm{KN}}{{\rm{O}}_{{\rm{3}}\left( {{\rm{aq}}} \right)}}\)
3 \({\rm{0}}{\rm{.015}}{\mkern 1mu} {\mkern 1mu} {\rm{M}}{\mkern 1mu} {\mkern 1mu} {\rm{ure}}{{\rm{a}}_{\left( {{\rm{aq}}} \right)}}\)
4 \({\rm{0}}{\rm{.015}}{\mkern 1mu} {\mkern 1mu} {\rm{M}}{\mkern 1mu} {\mkern 1mu} {\rm{glucos}}{{\rm{e}}_{\left( {{\rm{aq}}} \right)}}\)
CHXII02:SOLUTIONS

318967 In which of the following pairs of solutions will the values of the Van’t Hoff factor be the same?

1 \({\rm{0}}{\rm{.05}}\,{\rm{M}}\,\,{{\rm{K}}_{\rm{4}}}\left[ {{\rm{Fe}}{{\left( {{\rm{CN}}} \right)}_{\rm{6}}}} \right]\,\,{\rm{and}}\,\,{\rm{0}}{\rm{.10}}\,{\rm{M}}\,\,{\rm{FeS}}{{\rm{O}}_{\rm{4}}}\)
2 \({\rm{0}}{\rm{.20}}\,{\rm{M}}\,\,{\rm{NaCl}}\,\,{\rm{and}}\,\,{\rm{0}}{\rm{.10}}\,{\rm{M}}\,\,{\rm{BaC}}{{\rm{l}}_{\rm{2}}}\)
3 \({\rm{0}}.{\rm{5}}{\mkern 1mu} {\mkern 1mu} {\rm{M}}{\mkern 1mu} {\mkern 1mu} {\rm{FeS}}{{\rm{O}}{\rm{4}}}{\mkern 1mu} {\mkern 1mu} {\left( {{\rm{N}}{{\rm{H}}{\rm{4}}}} \right){\rm{2}}}{\rm{S}}{{\rm{O}}{\rm{4}}}.{\mkern 1mu} {\mkern 1mu} {\rm{6}}{{\rm{H}}{\rm{2}}}{\rm{O}}\) and
\({\rm{0}}.{\rm{02M}}{\mkern 1mu} {\mkern 1mu} {\rm{KCl}}.{\mkern 1mu} {\mkern 1mu} {\rm{MgC}}{{\rm{l}}{\rm{2}}}.{\mkern 1mu} {\mkern 1mu} {\rm{6}}{{\rm{H}}_{\rm{2}}}{\rm{O}}\)
4 All have same value
CHXII02:SOLUTIONS

318968 For a substance ‘A’ when dissolved in a solvent ‘B’ show the molecular mass corresponding to \({{\rm{A}}_{\rm{3}}}\). The Van’t Hoff factor will be

1 1
2 2
3 3
4 \(1/3\)
CHXII02:SOLUTIONS

318964 The solution from the following with highest depression in freezing point/lowest freezing point is

1 180 g of acetic acid dissolved in benzene
2 180 g of benzoic acid dissolved in benzene
3 180 g of glucose dissolved in water
4 180 g of acetic acid dissolved in water.
CHXII02:SOLUTIONS

318965 Repeated measurements of boiling points of separate solutions of 2.36 g mercurous chloride in 100 g of water produced \({\rm{\Delta }}{{\rm{T}}_{\rm{b}}}\) values in the range of 0.024 to 0.026 K. The atomic weights of mercury and chlorine are 200 and 35.5 respectively. \({{\rm{K}}_{\rm{b}}}{\rm{ = 0}}{\rm{.5}}{\mkern 1mu} {\mkern 1mu} {\rm{K}}{\mkern 1mu} {\mkern 1mu} {\rm{kg/mol}}\) for water. These data suggest that mercurous chloride functions as a/an

1 Covalent compound in aqueous medium
2 Ionic compound in aqueous medium
3 Reducing agent in aqueous medium
4 Oxidising agent in aqueous medium
CHXII02:SOLUTIONS

318966 Which of the following solutions will exhibit highest boiling point?

1 \({\rm{0}}{\rm{.01}}{\mkern 1mu} {\mkern 1mu} {\rm{M}}{\mkern 1mu} {\mkern 1mu} {\rm{N}}{{\rm{a}}_{\rm{2}}}{\rm{S}}{{\rm{O}}_{{\rm{4}}\left( {{\rm{aq}}} \right)}}\)
2 \({\rm{0}}{\rm{.01}}{\mkern 1mu} {\mkern 1mu} {\rm{M}}{\mkern 1mu} {\mkern 1mu} {\rm{KN}}{{\rm{O}}_{{\rm{3}}\left( {{\rm{aq}}} \right)}}\)
3 \({\rm{0}}{\rm{.015}}{\mkern 1mu} {\mkern 1mu} {\rm{M}}{\mkern 1mu} {\mkern 1mu} {\rm{ure}}{{\rm{a}}_{\left( {{\rm{aq}}} \right)}}\)
4 \({\rm{0}}{\rm{.015}}{\mkern 1mu} {\mkern 1mu} {\rm{M}}{\mkern 1mu} {\mkern 1mu} {\rm{glucos}}{{\rm{e}}_{\left( {{\rm{aq}}} \right)}}\)
CHXII02:SOLUTIONS

318967 In which of the following pairs of solutions will the values of the Van’t Hoff factor be the same?

1 \({\rm{0}}{\rm{.05}}\,{\rm{M}}\,\,{{\rm{K}}_{\rm{4}}}\left[ {{\rm{Fe}}{{\left( {{\rm{CN}}} \right)}_{\rm{6}}}} \right]\,\,{\rm{and}}\,\,{\rm{0}}{\rm{.10}}\,{\rm{M}}\,\,{\rm{FeS}}{{\rm{O}}_{\rm{4}}}\)
2 \({\rm{0}}{\rm{.20}}\,{\rm{M}}\,\,{\rm{NaCl}}\,\,{\rm{and}}\,\,{\rm{0}}{\rm{.10}}\,{\rm{M}}\,\,{\rm{BaC}}{{\rm{l}}_{\rm{2}}}\)
3 \({\rm{0}}.{\rm{5}}{\mkern 1mu} {\mkern 1mu} {\rm{M}}{\mkern 1mu} {\mkern 1mu} {\rm{FeS}}{{\rm{O}}{\rm{4}}}{\mkern 1mu} {\mkern 1mu} {\left( {{\rm{N}}{{\rm{H}}{\rm{4}}}} \right){\rm{2}}}{\rm{S}}{{\rm{O}}{\rm{4}}}.{\mkern 1mu} {\mkern 1mu} {\rm{6}}{{\rm{H}}{\rm{2}}}{\rm{O}}\) and
\({\rm{0}}.{\rm{02M}}{\mkern 1mu} {\mkern 1mu} {\rm{KCl}}.{\mkern 1mu} {\mkern 1mu} {\rm{MgC}}{{\rm{l}}{\rm{2}}}.{\mkern 1mu} {\mkern 1mu} {\rm{6}}{{\rm{H}}_{\rm{2}}}{\rm{O}}\)
4 All have same value
CHXII02:SOLUTIONS

318968 For a substance ‘A’ when dissolved in a solvent ‘B’ show the molecular mass corresponding to \({{\rm{A}}_{\rm{3}}}\). The Van’t Hoff factor will be

1 1
2 2
3 3
4 \(1/3\)
CHXII02:SOLUTIONS

318964 The solution from the following with highest depression in freezing point/lowest freezing point is

1 180 g of acetic acid dissolved in benzene
2 180 g of benzoic acid dissolved in benzene
3 180 g of glucose dissolved in water
4 180 g of acetic acid dissolved in water.
CHXII02:SOLUTIONS

318965 Repeated measurements of boiling points of separate solutions of 2.36 g mercurous chloride in 100 g of water produced \({\rm{\Delta }}{{\rm{T}}_{\rm{b}}}\) values in the range of 0.024 to 0.026 K. The atomic weights of mercury and chlorine are 200 and 35.5 respectively. \({{\rm{K}}_{\rm{b}}}{\rm{ = 0}}{\rm{.5}}{\mkern 1mu} {\mkern 1mu} {\rm{K}}{\mkern 1mu} {\mkern 1mu} {\rm{kg/mol}}\) for water. These data suggest that mercurous chloride functions as a/an

1 Covalent compound in aqueous medium
2 Ionic compound in aqueous medium
3 Reducing agent in aqueous medium
4 Oxidising agent in aqueous medium
CHXII02:SOLUTIONS

318966 Which of the following solutions will exhibit highest boiling point?

1 \({\rm{0}}{\rm{.01}}{\mkern 1mu} {\mkern 1mu} {\rm{M}}{\mkern 1mu} {\mkern 1mu} {\rm{N}}{{\rm{a}}_{\rm{2}}}{\rm{S}}{{\rm{O}}_{{\rm{4}}\left( {{\rm{aq}}} \right)}}\)
2 \({\rm{0}}{\rm{.01}}{\mkern 1mu} {\mkern 1mu} {\rm{M}}{\mkern 1mu} {\mkern 1mu} {\rm{KN}}{{\rm{O}}_{{\rm{3}}\left( {{\rm{aq}}} \right)}}\)
3 \({\rm{0}}{\rm{.015}}{\mkern 1mu} {\mkern 1mu} {\rm{M}}{\mkern 1mu} {\mkern 1mu} {\rm{ure}}{{\rm{a}}_{\left( {{\rm{aq}}} \right)}}\)
4 \({\rm{0}}{\rm{.015}}{\mkern 1mu} {\mkern 1mu} {\rm{M}}{\mkern 1mu} {\mkern 1mu} {\rm{glucos}}{{\rm{e}}_{\left( {{\rm{aq}}} \right)}}\)
CHXII02:SOLUTIONS

318967 In which of the following pairs of solutions will the values of the Van’t Hoff factor be the same?

1 \({\rm{0}}{\rm{.05}}\,{\rm{M}}\,\,{{\rm{K}}_{\rm{4}}}\left[ {{\rm{Fe}}{{\left( {{\rm{CN}}} \right)}_{\rm{6}}}} \right]\,\,{\rm{and}}\,\,{\rm{0}}{\rm{.10}}\,{\rm{M}}\,\,{\rm{FeS}}{{\rm{O}}_{\rm{4}}}\)
2 \({\rm{0}}{\rm{.20}}\,{\rm{M}}\,\,{\rm{NaCl}}\,\,{\rm{and}}\,\,{\rm{0}}{\rm{.10}}\,{\rm{M}}\,\,{\rm{BaC}}{{\rm{l}}_{\rm{2}}}\)
3 \({\rm{0}}.{\rm{5}}{\mkern 1mu} {\mkern 1mu} {\rm{M}}{\mkern 1mu} {\mkern 1mu} {\rm{FeS}}{{\rm{O}}{\rm{4}}}{\mkern 1mu} {\mkern 1mu} {\left( {{\rm{N}}{{\rm{H}}{\rm{4}}}} \right){\rm{2}}}{\rm{S}}{{\rm{O}}{\rm{4}}}.{\mkern 1mu} {\mkern 1mu} {\rm{6}}{{\rm{H}}{\rm{2}}}{\rm{O}}\) and
\({\rm{0}}.{\rm{02M}}{\mkern 1mu} {\mkern 1mu} {\rm{KCl}}.{\mkern 1mu} {\mkern 1mu} {\rm{MgC}}{{\rm{l}}{\rm{2}}}.{\mkern 1mu} {\mkern 1mu} {\rm{6}}{{\rm{H}}_{\rm{2}}}{\rm{O}}\)
4 All have same value
CHXII02:SOLUTIONS

318968 For a substance ‘A’ when dissolved in a solvent ‘B’ show the molecular mass corresponding to \({{\rm{A}}_{\rm{3}}}\). The Van’t Hoff factor will be

1 1
2 2
3 3
4 \(1/3\)
CHXII02:SOLUTIONS

318964 The solution from the following with highest depression in freezing point/lowest freezing point is

1 180 g of acetic acid dissolved in benzene
2 180 g of benzoic acid dissolved in benzene
3 180 g of glucose dissolved in water
4 180 g of acetic acid dissolved in water.
CHXII02:SOLUTIONS

318965 Repeated measurements of boiling points of separate solutions of 2.36 g mercurous chloride in 100 g of water produced \({\rm{\Delta }}{{\rm{T}}_{\rm{b}}}\) values in the range of 0.024 to 0.026 K. The atomic weights of mercury and chlorine are 200 and 35.5 respectively. \({{\rm{K}}_{\rm{b}}}{\rm{ = 0}}{\rm{.5}}{\mkern 1mu} {\mkern 1mu} {\rm{K}}{\mkern 1mu} {\mkern 1mu} {\rm{kg/mol}}\) for water. These data suggest that mercurous chloride functions as a/an

1 Covalent compound in aqueous medium
2 Ionic compound in aqueous medium
3 Reducing agent in aqueous medium
4 Oxidising agent in aqueous medium
CHXII02:SOLUTIONS

318966 Which of the following solutions will exhibit highest boiling point?

1 \({\rm{0}}{\rm{.01}}{\mkern 1mu} {\mkern 1mu} {\rm{M}}{\mkern 1mu} {\mkern 1mu} {\rm{N}}{{\rm{a}}_{\rm{2}}}{\rm{S}}{{\rm{O}}_{{\rm{4}}\left( {{\rm{aq}}} \right)}}\)
2 \({\rm{0}}{\rm{.01}}{\mkern 1mu} {\mkern 1mu} {\rm{M}}{\mkern 1mu} {\mkern 1mu} {\rm{KN}}{{\rm{O}}_{{\rm{3}}\left( {{\rm{aq}}} \right)}}\)
3 \({\rm{0}}{\rm{.015}}{\mkern 1mu} {\mkern 1mu} {\rm{M}}{\mkern 1mu} {\mkern 1mu} {\rm{ure}}{{\rm{a}}_{\left( {{\rm{aq}}} \right)}}\)
4 \({\rm{0}}{\rm{.015}}{\mkern 1mu} {\mkern 1mu} {\rm{M}}{\mkern 1mu} {\mkern 1mu} {\rm{glucos}}{{\rm{e}}_{\left( {{\rm{aq}}} \right)}}\)
CHXII02:SOLUTIONS

318967 In which of the following pairs of solutions will the values of the Van’t Hoff factor be the same?

1 \({\rm{0}}{\rm{.05}}\,{\rm{M}}\,\,{{\rm{K}}_{\rm{4}}}\left[ {{\rm{Fe}}{{\left( {{\rm{CN}}} \right)}_{\rm{6}}}} \right]\,\,{\rm{and}}\,\,{\rm{0}}{\rm{.10}}\,{\rm{M}}\,\,{\rm{FeS}}{{\rm{O}}_{\rm{4}}}\)
2 \({\rm{0}}{\rm{.20}}\,{\rm{M}}\,\,{\rm{NaCl}}\,\,{\rm{and}}\,\,{\rm{0}}{\rm{.10}}\,{\rm{M}}\,\,{\rm{BaC}}{{\rm{l}}_{\rm{2}}}\)
3 \({\rm{0}}.{\rm{5}}{\mkern 1mu} {\mkern 1mu} {\rm{M}}{\mkern 1mu} {\mkern 1mu} {\rm{FeS}}{{\rm{O}}{\rm{4}}}{\mkern 1mu} {\mkern 1mu} {\left( {{\rm{N}}{{\rm{H}}{\rm{4}}}} \right){\rm{2}}}{\rm{S}}{{\rm{O}}{\rm{4}}}.{\mkern 1mu} {\mkern 1mu} {\rm{6}}{{\rm{H}}{\rm{2}}}{\rm{O}}\) and
\({\rm{0}}.{\rm{02M}}{\mkern 1mu} {\mkern 1mu} {\rm{KCl}}.{\mkern 1mu} {\mkern 1mu} {\rm{MgC}}{{\rm{l}}{\rm{2}}}.{\mkern 1mu} {\mkern 1mu} {\rm{6}}{{\rm{H}}_{\rm{2}}}{\rm{O}}\)
4 All have same value
CHXII02:SOLUTIONS

318968 For a substance ‘A’ when dissolved in a solvent ‘B’ show the molecular mass corresponding to \({{\rm{A}}_{\rm{3}}}\). The Van’t Hoff factor will be

1 1
2 2
3 3
4 \(1/3\)