Question

3 multiple choice 1 point which of the following correctly lists the compounds in order of least to greatest boiling point? diethyl ether, water, anisole, diphenyl ether water, diethyl ether, diphenyl ether, anisole diphenyl ether, anisole, water, diethyl ether anisole, diphenyl ether, water, diethyl ether 4 multiple choice 1 point a scientist observes that the compounds in table 2 that have longer molecular structures tend to have lower boiling points. which of the following characteristics of these compounds would best account for their lower boiling points? the percentage of oxygen in the compound their atomic weights the relative closeness between the molecules due to crystalline structure the relative distance between the molecules due to branching in the compound experiment 2 in the second experiment, the student selected several different organic ethers - each of which featured distinct structural characteristics - and prepared them in pure, equal volume samples. each sample was heated under 1 atm of pressure until it began to boil. the boiling points and structural data for the students ether samples are shown in table 2.

Explanation:

Question 3:

Boiling - point is related to intermolecular forces. Water has hydrogen - bonding which gives it a relatively high boiling point. Diethyl ether has weak dipole - dipole and London dispersion forces. Anisole has a more complex structure and stronger intermolecular forces than diethyl ether. Diphenyl ether has even stronger London dispersion forces due to its large molecular size. Diethyl ether has the lowest boiling point among them, followed by water (due to its relatively small molecular size compared to the others despite hydrogen - bonding), then anisole, and finally diphenyl ether.

Question 4:

When compounds have branching in their structure, the molecules are more spread out and the relative distance between the molecules increases. This leads to weaker intermolecular forces and lower boiling points. The percentage of oxygen, atomic weights, and closeness due to crystalline structure are not the main factors explaining lower boiling points for compounds with longer molecular structures in this context.

Answer:

1. Diethyl Ether, Water, Anisole, Diphenyl Ether
2. The relative distance between the molecules due to branching in the compound