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

319012 2 g of benzoic acid dissolved in 25 g \({{\rm{C}}_{\rm{6}}}{{\rm{H}}_{\rm{6}}}\) shows a depression in freezing point equal to 1.62 K. \({{\rm{K}}_{\rm{f}}}{\mkern 1mu} {\mkern 1mu} {\rm{for}}{\mkern 1mu} {\mkern 1mu} {{\rm{C}}_{\rm{6}}}{{\rm{H}}_{\rm{6}}}{\mkern 1mu} {\mkern 1mu} {\rm{is}}{\mkern 1mu} {\mkern 1mu} {\rm{4}}{\rm{.9}}{\mkern 1mu} {\mkern 1mu} {\rm{K}}{\mkern 1mu} {\mkern 1mu} {\rm{molalit}}{{\rm{y}}^{{\rm{ - 1}}}}\). If acid forms dimer molecule in solution, then the percentage association of acid is

1 \({\rm{90}}{\rm{.2\% }}\)
2 \({\rm{99}}{\rm{.2\% }}\)
3 \({\rm{9}}{\rm{.8\% }}\)
4 \({\rm{0}}{\rm{.8\% }}\)
CHXII02:SOLUTIONS

319013 When mercuric iodide is added to the aqueous solution of KI, then the :

1 Freezing point is raised
2 Freezing point is lowered
3 Freezing point does not change
4 Boiling point does not change
CHXII02:SOLUTIONS

319014 Which of the following aqueous solutions has the highest freezing point?

1 0.01 M NaCl
2 \({\rm{0}}{\rm{.01MN}}{{\rm{a}}_{\rm{2}}}{\rm{S}}{{\rm{O}}_{\rm{4}}}\)
3 0.1 M Sucrose
4 0.1 M NaCl
KCET - 2015
CHXII02:SOLUTIONS

319015 van't Hoff factor more than unity indicates that the solute in solution is

1 dissociated
2 associated
3 Both (1) and (2)
4 cannot say anything
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CHXII02:SOLUTIONS

319012 2 g of benzoic acid dissolved in 25 g \({{\rm{C}}_{\rm{6}}}{{\rm{H}}_{\rm{6}}}\) shows a depression in freezing point equal to 1.62 K. \({{\rm{K}}_{\rm{f}}}{\mkern 1mu} {\mkern 1mu} {\rm{for}}{\mkern 1mu} {\mkern 1mu} {{\rm{C}}_{\rm{6}}}{{\rm{H}}_{\rm{6}}}{\mkern 1mu} {\mkern 1mu} {\rm{is}}{\mkern 1mu} {\mkern 1mu} {\rm{4}}{\rm{.9}}{\mkern 1mu} {\mkern 1mu} {\rm{K}}{\mkern 1mu} {\mkern 1mu} {\rm{molalit}}{{\rm{y}}^{{\rm{ - 1}}}}\). If acid forms dimer molecule in solution, then the percentage association of acid is

1 \({\rm{90}}{\rm{.2\% }}\)
2 \({\rm{99}}{\rm{.2\% }}\)
3 \({\rm{9}}{\rm{.8\% }}\)
4 \({\rm{0}}{\rm{.8\% }}\)
CHXII02:SOLUTIONS

319013 When mercuric iodide is added to the aqueous solution of KI, then the :

1 Freezing point is raised
2 Freezing point is lowered
3 Freezing point does not change
4 Boiling point does not change
CHXII02:SOLUTIONS

319014 Which of the following aqueous solutions has the highest freezing point?

1 0.01 M NaCl
2 \({\rm{0}}{\rm{.01MN}}{{\rm{a}}_{\rm{2}}}{\rm{S}}{{\rm{O}}_{\rm{4}}}\)
3 0.1 M Sucrose
4 0.1 M NaCl
KCET - 2015
CHXII02:SOLUTIONS

319015 van't Hoff factor more than unity indicates that the solute in solution is

1 dissociated
2 associated
3 Both (1) and (2)
4 cannot say anything
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CHXII02:SOLUTIONS

319012 2 g of benzoic acid dissolved in 25 g \({{\rm{C}}_{\rm{6}}}{{\rm{H}}_{\rm{6}}}\) shows a depression in freezing point equal to 1.62 K. \({{\rm{K}}_{\rm{f}}}{\mkern 1mu} {\mkern 1mu} {\rm{for}}{\mkern 1mu} {\mkern 1mu} {{\rm{C}}_{\rm{6}}}{{\rm{H}}_{\rm{6}}}{\mkern 1mu} {\mkern 1mu} {\rm{is}}{\mkern 1mu} {\mkern 1mu} {\rm{4}}{\rm{.9}}{\mkern 1mu} {\mkern 1mu} {\rm{K}}{\mkern 1mu} {\mkern 1mu} {\rm{molalit}}{{\rm{y}}^{{\rm{ - 1}}}}\). If acid forms dimer molecule in solution, then the percentage association of acid is

1 \({\rm{90}}{\rm{.2\% }}\)
2 \({\rm{99}}{\rm{.2\% }}\)
3 \({\rm{9}}{\rm{.8\% }}\)
4 \({\rm{0}}{\rm{.8\% }}\)
CHXII02:SOLUTIONS

319013 When mercuric iodide is added to the aqueous solution of KI, then the :

1 Freezing point is raised
2 Freezing point is lowered
3 Freezing point does not change
4 Boiling point does not change
CHXII02:SOLUTIONS

319014 Which of the following aqueous solutions has the highest freezing point?

1 0.01 M NaCl
2 \({\rm{0}}{\rm{.01MN}}{{\rm{a}}_{\rm{2}}}{\rm{S}}{{\rm{O}}_{\rm{4}}}\)
3 0.1 M Sucrose
4 0.1 M NaCl
KCET - 2015
CHXII02:SOLUTIONS

319015 van't Hoff factor more than unity indicates that the solute in solution is

1 dissociated
2 associated
3 Both (1) and (2)
4 cannot say anything
For More Updates join with Us
CHXII02:SOLUTIONS

319012 2 g of benzoic acid dissolved in 25 g \({{\rm{C}}_{\rm{6}}}{{\rm{H}}_{\rm{6}}}\) shows a depression in freezing point equal to 1.62 K. \({{\rm{K}}_{\rm{f}}}{\mkern 1mu} {\mkern 1mu} {\rm{for}}{\mkern 1mu} {\mkern 1mu} {{\rm{C}}_{\rm{6}}}{{\rm{H}}_{\rm{6}}}{\mkern 1mu} {\mkern 1mu} {\rm{is}}{\mkern 1mu} {\mkern 1mu} {\rm{4}}{\rm{.9}}{\mkern 1mu} {\mkern 1mu} {\rm{K}}{\mkern 1mu} {\mkern 1mu} {\rm{molalit}}{{\rm{y}}^{{\rm{ - 1}}}}\). If acid forms dimer molecule in solution, then the percentage association of acid is

1 \({\rm{90}}{\rm{.2\% }}\)
2 \({\rm{99}}{\rm{.2\% }}\)
3 \({\rm{9}}{\rm{.8\% }}\)
4 \({\rm{0}}{\rm{.8\% }}\)
CHXII02:SOLUTIONS

319013 When mercuric iodide is added to the aqueous solution of KI, then the :

1 Freezing point is raised
2 Freezing point is lowered
3 Freezing point does not change
4 Boiling point does not change
CHXII02:SOLUTIONS

319014 Which of the following aqueous solutions has the highest freezing point?

1 0.01 M NaCl
2 \({\rm{0}}{\rm{.01MN}}{{\rm{a}}_{\rm{2}}}{\rm{S}}{{\rm{O}}_{\rm{4}}}\)
3 0.1 M Sucrose
4 0.1 M NaCl
KCET - 2015
CHXII02:SOLUTIONS

319015 van't Hoff factor more than unity indicates that the solute in solution is

1 dissociated
2 associated
3 Both (1) and (2)
4 cannot say anything