QUESTIONS 1. Two of the liquids, significantly different atl valnes. Explain the

Question

QUESTIONS 1. Two of the liquids, significantly different atl valnes. Explain the diference in the lAtl values of these substances, based on their intermolecular forces -pentane and 1-butanol, had nearly the same molecular weights, but values. Explain the differen Which of the alcohols studied has the strongest intermolecular forces of attraction? The weakest intermolecular forces? Explain using the results of this experiment. 2. 3. Which of the alkanes studied has the stronger intermolecular forces of attraction? The Explain using the results of this experiment.

Explanation / Answer

1. Even though n-pentane and 1-butanol have molecular weights of 72 and 74, respectively, 1-butanol has a much smaller due to the presence of hydrogen bonding between its molecules. This results in a stronger attraction, and a slower rate of evaporation.

2. The 1-butanol has the strongest attractions between its molecules. Methanol has the weakest attractions. The 1-butanol has the largest molecules and resulting strongest dispersion forces. This gives it the lowest evaporation rate and the smallest t.

3. The n-hexane has the stronger attractions between its molecules. The n-pentane has the weaker attractions. The n-hexane has the larger molecules and the resulting stronger dispersion forces. This gives it a lower evaporation rate and the smallest t.

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