51) A crystal of solid NaCl, when placed in an aqueous NaCI solution, partially

Question

51) A crystal of solid NaCl, when placed in an aqueous NaCI solution, partially dissolves. This means that the original NaCI solution a. was a supersaturated solution b. was a saturated solution c. was an unsaturated solution d. was more concentrated than the new solution 52) In which of the following pairs of properties are both members of the pair colligative properties? a. vapor pressure, boiling point b. density, boiling point c. solubility, freezing point d. density, freezing point 53) Which of the following aqueous solutions would have the lowest freezing point? a. 0.10 M ethylene glycol b. 0.25 M ethylene glycol c. 0.50 M ethylene glycol d. 1.00 M ethylene glycol 54) An osmotic semi-permeable membrane is a membrane through which a. both solvent and solute molecules can pass b. solvent but not solute molecules can pass c. solute but not solvent molecules can pass d. neither solvent nor solute molecules can pass a. 1.5 M glucose b. 1.5 M NaCl c. 1.0 M Na3PO d. 3.0 M KBr 55) Which of the following solutions has an osmolarity of 3.0 osmol?

Explanation / Answer

51.

(c) was an saturated solution. Because that only some salt gets dissolved.

52.

(a) vapour pressure , boiling point

53.

(a) 0.10 M ethyleneglycol

54.

(b) solvent but not solute molecules can pass

55.

(b)

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