Answer all the question to get full pts. 1) Dynamic equilibrium between liquid a

Question

Answer all the question to get full pts.

1)Dynamic equilibrium between liquid and gas is established when __________.

A)the vapor pressure of the liquid equals the external pressure
B)the liquid and vapor are at the same temperature
C)a liquid vaporizes and condenses at the same rate
D)the liquid is entirely evaporated

2)The boiling points for a set of compounds in a homologous series can be qualitatively predicted using intermolecular force strengths. Using their condensed structural formulas, rank the homologous series for a set of alkanes by their boiling point. Rank from highest to lowest boiling point. To rank items as equivalent, overlap them. a)CH3CH2CH2CH3 b) CH3CH2CH2CH2CH2CH3                       CH3 c) CH3CH2CCH2CH3                         CH3
d)CH3CH2CH2CH2CH2CH2CH3

Explanation / Answer

1)

C)a liquid vaporizes and condenses at the same rate

2)

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