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

319042 The molal elevation constant of water is \(0.52^{\circ} \mathrm{cm}^{-1}\). The boiling point of 1.0 molal aqueous \(\mathrm{KCl}\) solution (assuming complete dissociation of \(\mathrm{KCl}\) ), therefore, should be

1 \(98.96^{\circ} \mathrm{C}\)
2 \(100.52^{\circ} \mathrm{C}\)
3 \(101.04^{\circ} \mathrm{C}\)
4 \(107.01^{\circ} \mathrm{C}\)
CHXII02:SOLUTIONS

319043 Which of the following solution will have
lowest boiling point?

1 0.1 M NaCl
2 0.1 M KCl
3 \({\rm{0}}{\rm{.1M}}\,{\rm{CaC}}{{\rm{l}}_{\rm{2}}}\)
4 \(0.1\, \mathrm{M}\) glucose
CHXII02:SOLUTIONS

319044 1 molal aqueous solution of an electrolyte \({{\rm{A}}_{\rm{2}}}{{\rm{B}}_{\rm{3}}}\;{\rm{is}}\,\,{\rm{60\% }}\) ionised. The boiling point of the solution at 1atm is \(\left( {{{\rm{K}}_{{\rm{b}}\left( {{{\rm{H}}_{\rm{2}}}{\rm{O}}} \right)}}{\rm{ = 0}}{\rm{.52Kkg}}{\mkern 1mu} {\mkern 1mu} {\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}} \right)\)

1 274.76 K
2 377 K
3 376.4 K
4 374.76 K
CHXII02:SOLUTIONS

319045 If the observed and theoretical molecular mass of NaCl is found to be 31.80 and 58.50, then the degree of dissociation of NaCl is

1 \(83.96\% \)
2 \(8.39\% \)
3 \(90\% \)
4 \(100\% \)
CHXII02:SOLUTIONS

319042 The molal elevation constant of water is \(0.52^{\circ} \mathrm{cm}^{-1}\). The boiling point of 1.0 molal aqueous \(\mathrm{KCl}\) solution (assuming complete dissociation of \(\mathrm{KCl}\) ), therefore, should be

1 \(98.96^{\circ} \mathrm{C}\)
2 \(100.52^{\circ} \mathrm{C}\)
3 \(101.04^{\circ} \mathrm{C}\)
4 \(107.01^{\circ} \mathrm{C}\)
CHXII02:SOLUTIONS

319043 Which of the following solution will have
lowest boiling point?

1 0.1 M NaCl
2 0.1 M KCl
3 \({\rm{0}}{\rm{.1M}}\,{\rm{CaC}}{{\rm{l}}_{\rm{2}}}\)
4 \(0.1\, \mathrm{M}\) glucose
CHXII02:SOLUTIONS

319044 1 molal aqueous solution of an electrolyte \({{\rm{A}}_{\rm{2}}}{{\rm{B}}_{\rm{3}}}\;{\rm{is}}\,\,{\rm{60\% }}\) ionised. The boiling point of the solution at 1atm is \(\left( {{{\rm{K}}_{{\rm{b}}\left( {{{\rm{H}}_{\rm{2}}}{\rm{O}}} \right)}}{\rm{ = 0}}{\rm{.52Kkg}}{\mkern 1mu} {\mkern 1mu} {\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}} \right)\)

1 274.76 K
2 377 K
3 376.4 K
4 374.76 K
CHXII02:SOLUTIONS

319045 If the observed and theoretical molecular mass of NaCl is found to be 31.80 and 58.50, then the degree of dissociation of NaCl is

1 \(83.96\% \)
2 \(8.39\% \)
3 \(90\% \)
4 \(100\% \)
CHXII02:SOLUTIONS

319042 The molal elevation constant of water is \(0.52^{\circ} \mathrm{cm}^{-1}\). The boiling point of 1.0 molal aqueous \(\mathrm{KCl}\) solution (assuming complete dissociation of \(\mathrm{KCl}\) ), therefore, should be

1 \(98.96^{\circ} \mathrm{C}\)
2 \(100.52^{\circ} \mathrm{C}\)
3 \(101.04^{\circ} \mathrm{C}\)
4 \(107.01^{\circ} \mathrm{C}\)
CHXII02:SOLUTIONS

319043 Which of the following solution will have
lowest boiling point?

1 0.1 M NaCl
2 0.1 M KCl
3 \({\rm{0}}{\rm{.1M}}\,{\rm{CaC}}{{\rm{l}}_{\rm{2}}}\)
4 \(0.1\, \mathrm{M}\) glucose
CHXII02:SOLUTIONS

319044 1 molal aqueous solution of an electrolyte \({{\rm{A}}_{\rm{2}}}{{\rm{B}}_{\rm{3}}}\;{\rm{is}}\,\,{\rm{60\% }}\) ionised. The boiling point of the solution at 1atm is \(\left( {{{\rm{K}}_{{\rm{b}}\left( {{{\rm{H}}_{\rm{2}}}{\rm{O}}} \right)}}{\rm{ = 0}}{\rm{.52Kkg}}{\mkern 1mu} {\mkern 1mu} {\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}} \right)\)

1 274.76 K
2 377 K
3 376.4 K
4 374.76 K
CHXII02:SOLUTIONS

319045 If the observed and theoretical molecular mass of NaCl is found to be 31.80 and 58.50, then the degree of dissociation of NaCl is

1 \(83.96\% \)
2 \(8.39\% \)
3 \(90\% \)
4 \(100\% \)
CHXII02:SOLUTIONS

319042 The molal elevation constant of water is \(0.52^{\circ} \mathrm{cm}^{-1}\). The boiling point of 1.0 molal aqueous \(\mathrm{KCl}\) solution (assuming complete dissociation of \(\mathrm{KCl}\) ), therefore, should be

1 \(98.96^{\circ} \mathrm{C}\)
2 \(100.52^{\circ} \mathrm{C}\)
3 \(101.04^{\circ} \mathrm{C}\)
4 \(107.01^{\circ} \mathrm{C}\)
CHXII02:SOLUTIONS

319043 Which of the following solution will have
lowest boiling point?

1 0.1 M NaCl
2 0.1 M KCl
3 \({\rm{0}}{\rm{.1M}}\,{\rm{CaC}}{{\rm{l}}_{\rm{2}}}\)
4 \(0.1\, \mathrm{M}\) glucose
CHXII02:SOLUTIONS

319044 1 molal aqueous solution of an electrolyte \({{\rm{A}}_{\rm{2}}}{{\rm{B}}_{\rm{3}}}\;{\rm{is}}\,\,{\rm{60\% }}\) ionised. The boiling point of the solution at 1atm is \(\left( {{{\rm{K}}_{{\rm{b}}\left( {{{\rm{H}}_{\rm{2}}}{\rm{O}}} \right)}}{\rm{ = 0}}{\rm{.52Kkg}}{\mkern 1mu} {\mkern 1mu} {\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}} \right)\)

1 274.76 K
2 377 K
3 376.4 K
4 374.76 K
CHXII02:SOLUTIONS

319045 If the observed and theoretical molecular mass of NaCl is found to be 31.80 and 58.50, then the degree of dissociation of NaCl is

1 \(83.96\% \)
2 \(8.39\% \)
3 \(90\% \)
4 \(100\% \)