[didleydoo]

1. Double bonds or cyclic structures are necessary to form diastereomers. T or F
2. 2,3-dimethylbutane has two secondary carbons. T or F
3. A ring inversion (chair flip) in a disubstituted cyclohexane converts a cis isomer into a trans isomer. T or F
4. An acid with a lower pKa will preferentially protonate a base whose conjugate acid has a higher pKa. T or F
5. There can be more than one Lewis structure for a given compound that satisfies the octet rule. T or F

is it
1-F
2-T
3-F
4- I don't know..
5- True..is it related to resonance?

please explain each question thanks (:

[fledarmus]

What are your explanations for the answers you gave? Or are you just guessing?

Please show (or at least describe) the structures you envision to answer the first three.