Chapter 11 MCQ
2
1. Which of the following solutions has the closest boiling point to that of 0.1 m Ca(NO 3 ) 2 ? a. 1.0 m glucose b. 2.0 m HCl c. 1.0 m NaNO 3 d. 1.0 m K 2 SO 4 e. 0.5 m NH 4 Cl 2. The osmotic pressure of 0.125 M KCl solution at 25 o C is about 6.0 atm. Estimate the osmotic pressure of a 0.125 M K 2 SO 4 solution. a. 1.0 atm b. 1.5 atm c. 3.0 atm d. 6.0 atm e. 9.0 atm 3. Which of the following describes a 1.0 m KCl solution compared to that of pure water? I. The KCl solution has a higher boiling point. II. The KCl solution has a higher osmotic pressure III. The KCl solution has a lower vapor pressure a. I only b. II only c. I and II only d. II and III only e. I, II and III only 4. The freezing point elevation of 1.0 m glucose solution is 1.86 o C. If the amount of water is doubled, which of the following changes is expected? I. The freezing point of the solution is doubled. II. The molality of the solution is halved. III. The freezing point elevation remains the same. a. I only b. II only c. III only
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Transcript of Chapter 11 MCQ
1. Which of the following solutions has the closest boiling point to that of 0.1 m Ca(NO3)2?a. 1.0 m glucoseb. 2.0 m HClc. 1.0 m NaNO3
d. 1.0 m K2SO4
e. 0.5 m NH4Cl
2. The osmotic pressure of 0.125 M KCl solution at 25oC is about 6.0 atm. Estimate the osmotic pressure of a 0.125 M K2SO4 solution.
a. 1.0 atmb. 1.5 atmc. 3.0 atmd. 6.0 atme. 9.0 atm
3. Which of the following describes a 1.0 m KCl solution compared to that of pure water?I. The KCl solution has a higher boiling point.
II. The KCl solution has a higher osmotic pressureIII. The KCl solution has a lower vapor pressure
a. I onlyb. II onlyc. I and II onlyd. II and III onlye. I, II and III only
4. The freezing point elevation of 1.0 m glucose solution is 1.86oC. If the amount of water is doubled, which of the following changes is expected?
I. The freezing point of the solution is doubled.II. The molality of the solution is halved.
III. The freezing point elevation remains the same.a. I onlyb. II onlyc. III onlyd. I and II onlye. II and III only
5. Which of the following is expected to be the most soluble in water?a. Pentane, CH3CH2 CH2 CH2 CH3
b. Pentanol, CH3CH2 CH2 CH2 CH2 OHc. Hexane, CH3CH2 CH2 CH2CH2 CH3
d. Hexanol, CH3CH2 CH2 CH2 CH2 CH2OHe. Dimethyl Ether, CH3—O—CH3
