One mole of glucose was dissolved in 1 kg of water, ethanol, ether, and benzene separately and the molal boiling point constant of each solution was found to be 0.52, 1.75,2.16, and 2.70 in the units of / °C kg mol-1 respectively. Which of the following figures shows benzene as a solvent in solution?
Correct answer: D. 4
- A. 1
- B. 2
- C. 3
- D. 4
Explanation
Since the solution of benzene and glucose has the highest molal boiling point constant of 2.70, this means that the equilibrium between benzene vapor and the solution will be shifted toward the solution side. Hence vapor pressure of Benzene will be the lowest and the level of mercury will be the highest. As it is numerical, it can have only one possible answer.
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About Chemical Equilibrium
Reversible reactions reach dynamic equilibrium when forward and reverse rates become equal, and Le Chatelier's principle predicts the effect of changing concentration, pressure or temperature. The chapter also covers solubility product, the common ion effect, buffer action and the conditions used in Haber's process, with equilibrium shifts distinguished from changes in the equilibrium constant.
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