Practice Reactions Involving Cleavage Of O–h Bond (8.9.1) - Aldehydes, Ketones and Carboxylic Acids

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6 sample questions

Question 1.
What happens when a carboxylic acid is added to sodium bicarbonate?
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Consider what gases evolve in acid-base reactions.
Question 2.
Define a carboxylate ion.
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Think about the resonance structures involved.
3Question 3.
What does the dissociation of a carboxylic acid produce?
- Carboxylic acid and salt
- Carboxylate ion and hydronium ion
- Hydrogen and alkali
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Think about what happens to the hydrogen ion.
4Question 4.
True or False: Carboxylic acids can only react with strong bases.
- True
- False
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Consider all types of bases, not just strong ones.
Question 5.
A compound has a pKₐ of 2.5. Is this compound a strong acid, weak acid, or neutral?
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Compare the pKₐ with the established ranges for acids.
Question 6.
Describe how the change from methoxy to nitro group on a benzoic acid increases its acidity.
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Consider how each group influences electron density.

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