1. What is the difference between a ketone and an aldehyde? 2. An ether is to an alcohol as an ester is to (a) a phenol. (b) a carboxylic acid. (c) an amide. (d) an ether.  3. Why do ethers typically...

(a) a phenol.

(b) a carboxylic acid.

(c) an amide.

(d) an ether.  3. Why do ethers typically have lower boiling points than alcohols? 4. What is the percent volume of water in 80-proof vodka? 5. One of the skin-irritating components of poison oak is tetrahydrourushiol:

The long, nonpolar hydrocarbon tail embeds itself in a person’s oily skin, where the molecule initiates an allergic response. Scratching the itch spreads tetrahydrourushiol molecules over a greater surface area, causing the zone of irritation to grow. Is this compound an alcohol or a phenol? Defend your answer.