Question

Use the structure for the three molecules below and follow the following questions:

(1) CH3-CH2-CH2-CH2-CH3

(2) CH3-CH2-CH2-CH2-OH (O has two lone pairs)

(3) CH3-CH2-OH (O has two lone pairs)

A. For each, list all of the intermolecular forces.

B. only two out of the three form a homogeneous solution when mixed. Determine which and explain why

C. Rank from lowest to highest boiling point. Explain

Answer 1

Ans:- a list of intermolecular forces: ☺ CH-CH2-CH-CH₂-CH Wander wall's forces. ☺ chy-Chh - Chhe CH-04 → @ vander wall's forces. Hydrogen bonding. Güch-CH₂-OH › @ vander wall's forces. - ③ Hydrogen bonding. B only pentano tout butanol (ch-CH-CH2-84204) 4 I ethanol G (CH3-C420H) forms homogenous solutions, because they are polar in nature & possess hydrogen bonding therefore they have higher solubility in poler solvents while the allanes are hydrophobic in nature therefore they dont fooms homogenous soin. o order of Bip :-CH2-CH-1th CCH < cuyc 04 < CH₂ - CH2=CH-CH2-04 - As the strength of hydrogen bond is more than I that of vaneher walls forces therefore alcohols have more B.P than alkanes. while in alcohols as the carbon chain increases the B.p. of alcohol increases therefore butanol have. more B. P than ethanol.