Which of these pure compounds has hydrogen bonding in the liquid state?
1,1,1-trichloroethane, CH3CCl3
trimethylamine, (CH3)3N
hydrogen fluoride, HF
hydrogen sulfide, H2S
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Which of these pure compounds has hydrogen bonding in the liquid state?
1,1,1-trichloroethane, CH3CCl3
trimethylamine, (CH3)3N
hydrogen fluoride, HF
hydrogen sulfide, H2S
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Which of these isomers has the highest boiling temperature?
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(1)
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Which of these isomers with the formula C8H18 has the lowest boiling temperature?
CH3CH(CH3)CH2CH2CH(CH3)CH3
CH3CH(CH3)CH2CH2CH2CH2CH3
CH3C(CH3)2CH2CH(CH3)CH3
CH3CH2CH2CH2CH2CH2CH2CH3
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Which sequence shows the molecules in order of increasing boiling temperature?
H2O < Br2 < Cl2 < CH4
Br2 < CH4 < Cl2 < H2O
Cl2 < CH4 < H2O < Br2
CH4 < Cl2 < Br2 < H2O
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The viscosities of four liquid organic compounds are compared by placing the liquids in separate identical tubes, each with an air bubble at the top.
The tubes are inverted, and the times measured for the air bubble to travel the length of the tube.
For which compound does the air bubble take the longest time?
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Which is not correct about ice?
ice has a lower density than water
H2O molecules are further apart in ice than in water
the H−O−H bond angle is the same in ice and in water
H2O molecules in ice are held together by hydrogen bonds
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Which intermolecular forces exist between the molecules of the compound shown?
hydrogen bonding and London forces only
hydrogen bonding and permanent dipole‐permanent dipole forces only
London forces and permanent dipole‐permanent dipole forces only
hydrogen bonding, permanent dipole‐permanent dipole forces and London forces
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Which solvent dissolves the greatest amount of hydrocarbon C35H72?
butan‐1‐ol
ethanoic acid
hexane
water
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Which row shows the hydrogen halides in order of increasing boiling temperature?
Lowest Highest | ||||||
☐ | A | HF | HCl | HBr | HI | |
☐ | B | HI | HBr | HCl | HF | |
☐ | C | HCl | HBr | HI | HF | |
☐ | D | HF | HI | HBr | HCl |
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