Indietro
- Arrange these compounds in order of increasing boiling point and explain your reasoning: a. H2S b. H2Se c. H2O.
Problema 4
Problema 35
Determine the kinds of intermolecular forces that are present in each element or compound. a. N2 b. NH3 c. CO d. CCl4
Problema 36a
Determine the kinds of intermolecular forces that are present in each element or compound. a. Kr
Problema 36b
Determine the kinds of intermolecular forces that are present in each element or compound. b. NCl3
Problema 36c
Determine the kinds of intermolecular forces that are present in each element or compound. c. SiH4
Problema 36d
Determine the kinds of intermolecular forces that are present in each element or compound. d. HF
Problema 37a,b,c
Determine the kinds of intermolecular forces that are present in each element or compound. a. HCl b. H2O c. Br2
Problema 37d
Determine the kinds of intermolecular forces that are present in each element or compound. d. He
Problema 38a,b
Determine the kinds of intermolecular forces that are present in each element or compound. a. PH3 b. HBr
Problema 38c
Determine the kinds of intermolecular forces that are present in each element or compound. c. CH3OH
Problema 38d
Determine the kinds of intermolecular forces that are present in each element or compound. d. I2
- Arrange these compounds in order of increasing boiling point: a. CH4, b. CH3CH3, c. CH3CH2Cl, d. CH3CH2OH. Explain your reasoning.
Problema 39
Problema 41a,b
In each pair of compounds, pick the one with the higher boiling point. Explain your reasoning. a. CH3OH or CH3SH b. CH3OCH3 or CH3CH2OH
Problema 41c
In each pair of compounds, pick the one with the higher boiling point. Explain your reasoning. c. CH4 or CH3CH3
Problema 42a,c
In each pair of compounds, pick the one with the higher boiling point. Explain your reasoning. a. NH3 or CH4 c. CO2 or NO2
Problema 42b
In each pair of compounds, pick the one with the higher boiling point. Explain your reasoning. b. CS2 or CO2
Problema 43
In each pair of compounds, pick the one with the higher vapor pressure at a given temperature. Explain your reasoning. a. Br2 or I2 b. H2S or H2O c. NH3 or PH3
Problema 44a,c
In each pair of compounds, pick the one with the higher vapor pressure at a given temperature. Explain your reasoning. a. CH4 or CH3Cl c. CH3OH or H2CO
Problema 44b
In each pair of compounds, pick the one with the higher vapor pressure at a given temperature. Explain your reasoning. b. CH3CH2CH2OH or CH3OH
Problema 45a,b,c
Determine whether each pair of compounds forms a homogeneous solution when combined. For those that form homogeneous solutions, indicate the type of forces that are involved. a. CCl4 and H2O b. KCl and H2O c. Br2 and CCl4
Problema 45d
Determine whether each pair of compounds forms a homogeneous solution when combined. For those that form homogeneous solutions, indicate the type of forces that are involved. d. CH3CH2OH and H2O
Problema 46
Determine whether each pair of compounds forms a homogeneous solution when combined. For those that form homogeneous solutions, indicate the type of forces that are involved. a. CH3CH2CH2CH2CH3 and CH3CH2CH2CH2CH2CH3 b. CBr4 and H2O c. LiNO3 and H2O d. CH3OH and CH3CH2CH2CH2CH3
Problema 47
Which compound would you expect to have greater surface tension: acetone [(CH3)2CO] or water (H2O)? Explain.
- Why does water wet some surfaces and bead up on others, while mercury beads up on almost all surfaces?
Problema 48
Problema 49
The structures of two isomers of heptane are shown. Which of these two compounds would you expect to have the greater viscosity?
Problema 50
Explain why the viscosity of multigrade motor oils is less temperature-dependent than that of single-grade motor oils.
- Why does water in a glass tube with grease or oil residue display a flat meniscus, whereas water in a clean glass tube displays a concave meniscus?
Problema 51
Problema 51c
Determine whether each molecule is polar or nonpolar. c. BrCl5
Problema 52
When a thin glass tube is put into water, the water rises 1.4 cm. When the same tube is put into hexane, the hexane rises only 0.4 cm. Explain.
- Which evaporates more quickly: 55 mL of water in a beaker with a diameter of 4.5 cm or 55 mL of water in a dish with a diameter of 12 cm, and is the vapor pressure of the water different in the two containers? Explain.
Problema 53