JEE MainChemistrySolutionsMCQ+4 / −1
The freezing point of benzene decreases by 0.450C when 0.2 g of acetic acid is added to 20g of benzene. If acetic acid associates to form a dimer in benzene, percentage association of acetic acid in benzene will be: (Kf for benzene = 5.12 K kg mol–1)
- A80.4 %
- B74.6 %
- C94.6 %
- D64.6 %
More from Solutions
- The solubility of in water at 300 K and 500 torr partial pressure is 0.01 g L−1. The solubility (in g L−1) at 750 torr partial pressure is :2016 · MCQ
- An aqueous solution of a salt at certain temperature has a van’t Hoff factor of 2. The degree of dissociation for this solution of the salt is :2016 · MCQ
- 18 g glucose () is added to 178.2 g water. The vapor pressure of water (in torr) for this aqueous solution is :2016 · MCQ
- The vapour pressure of acetone at 20oC is 185 torr. When 1.2 g of a non-volatile substance was dissolved in 100 g of acetone at 20oC, its vapour pressure was 183 torr. The molar mass (g mol-1) of the substance is:2015 · MCQ
- Consider separate solutions of 0.500 M (aq), 0.100 M (aq), 0.250 M (aq) and 0.125 M (aq) at 25oC. Which statement is true about these solutions, assuming all salts to be strong electrolytes?2014 · MCQ
- Kf for water is 1.86K kg mol–1. If your automobile radiator holds 1.0 kg of water, how many grams of ethylene glycol () must you add to get the freezing point of the solution lowered to –2.8oC ?2012 · MCQ
- The degree of dissociation ( ) of a weak electrolyte, AxBy is related to van’t Hoff factor (i) by the expression :2011 · MCQ
- Ethylene glycol is used as an antifreeze in a cold climate. Mass of ethylene glycol which should be added to 4 kg of water to prevent it from freezing at −6oC will be : [Kf for water = 1.86 K kg mol−1 , and molar mass of ethylene glycol =…2011 · MCQ