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1. Let\'s compare two compounds of similar molar mass in which A is comprised of

ID: 810573 • Letter: 1

Question

1. Let's compare two compounds of similar molar mass in which A is comprised of nonpolar molecules and B composed of polar molecules. Which of the following statements is true?

2. The long hydrocarbon tails of soap molecules are:

3. Which of the following molecules is an example of an amphipathic compound?

4. fatty acid or fatty acid salt

5. Which is true?

6. KCl or (CH3)3N

7. Select all that apply:

B will boil at a higher temperature than will A. Both compounds have the same boiling point. B will boil at a lower temperature than will A. B will not boil.

Explanation / Answer

Both compounds have the same boiling point.

2) . The long hydrocarbon tails of soap molecules are:

hydrophobic and attracted to water

3) Which of the following molecules is an example of an amphipathic compound?

Nitrogen

4)   4. fatty acid or fatty acid salt

Fatty acid is more soluble in water.

5) Which is true?

The fatty acid can form stronger hydrogen bonding interactions not available to the fatty acid salt.

6) KCl or (CH3)3N

(CH3)3N is more soluble in water.

7) Select all that apply:

The ions in KCl readily dissolve in water through strong hydrogen bonding interactions

The ions in KCl readily dissolve in water through strong ion-dipole interactions.