Part 1 1. Which molecule experiences stronger dispersion forces CH, or C,H a. CH

Question

Part 1 1. Which molecule experiences stronger dispersion forces CH, or C,H a. CH4 They experience the same degree of dispersion force d. c. It depends on other factors 2. Which molecule experiences stronger dispersion forces CCl, or CF a. CCl b. CF c. They experience the same degree of dispersion force d. It depends on other factors 3. Which of the following two compounds, CH,CI, and CH,F2, do you expect to have a higher boiling point? a. CH CI, b. CH2F2 c. They should have virtually the same boiling point 4. Viscosity increases with increasing temperature a. True b. False 5. Which of the following is not a colligative property? a. Boiling point elevation b. Vapor pressure increase c. Osmotic pressure d. Boyle's law 6. Volatile solutes have lower vapor pressures than non-volatile solutes a. True b. False 7. Which is larger 100.0 ppm or 1.00 ppb 100.0 ppm 1.00 ppb They are equal It depends a. b. c. d. 8. The van't Hoff factor increases with increasing solute concentration a. True b. False 9. What happens to the solubility of a gas as temperature increases? a. It increases b. It decreases c. It stays the same d. It depends on the gas

Explanation / Answer

1. option B

while incresing the chain length dispersion forces will increase

2. optionB

based on the surface area of the molecule

3.

option A CH2Cl2

higher the molecular weight more the boiling point

4)

option B

it will decrease with T

5)

option D

Boyles law

6)

false

volatile solutes have higher vapour pressure

7) option A

100 PPM

1 ppm = 1000ppb

8)

False

9)

decreases

Henry's law

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