Cr he Lewis Structure for each molecule. Identify the type of intermolecular for

Question

Cr he Lewis Structure for each molecule. Identify the type of intermolecular forces in each species. Circle the member of the pair with the corresponding property (A) Lowest boiling point: CCl CFra tion-polo) (B) Highest vapor pressure: CH,H OH or CH,CH,C (C) Greatest Viscosity: (CHs)NH or (CHsN (D) Largest ,ap. LiCI HCI List the following molecules in order of increasing surface tension a) HOCH CH OH, CH,CH CH CH CH CH,CH,OH . Which has the highest boiling point? b) CH,CH,NH, CH,CH-O-CH,CH, HOCH,CH,CH,CH,OH The following molecules have the same molecular formula (C,H,0), yet they have different normal boiling points, as shown. Explain the difference in the boiling points (b) Ethyl methyl ether (a) Propandl 97.2C 10.80

Explanation / Answer

I'm supposed to answer only one question at a time. I've answered Q2.

Stronger the intermolecular forces, more is the surface tension. From the options, we can see that the first compound is a diol and will have dipole forces between the molecules. So surface tension is highest. The third compound contains one hydroxyl group and is polar to some extent. It will also have dipole forces. The second compound has no functional group and has weak Vander waal forces. So surface tension is least.

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