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Reactions of Carbonyl Compounds

See attachment for better symbol and reaction representation.

1. Complete the following reaction by drawing a structural formula for the product.
?
• You do not have to consider stereochemistry.
• You do not have to explicitly draw H atoms.
2. Draw a structural formula for the major organic anion formed when 2-ethylbenzaldehyde is reacted with Tollens' reagent.
• You do not have to consider stereochemistry.
• You do not have to explicitly draw H atoms.
• If no reaction occurs, draw the starting material.
3. Draw a structural formula for the product formed when cyclopentanone is reduced by hydrogen in the presence of a transition-metal catalyst.
• You do not have to consider stereochemistry.
• You do not have to explicitly draw H atoms.
4. Complete the following reaction by drawing a structural formula for the product.
+ H2 ?

5. Give the name of the missing organic reactant in the following reaction.

? + 2 Ag(NH3)2+ + 3 OH- + 2 Ag + 4 NH3 + 2 H2O
6. Complete the following single-step reaction by writing the name of the reactant.
?
7. Draw a structural formula for the hemiacetal formed when one molecule of ethanol combines with one pentanal molecule.
• You do not have to consider stereochemistry.
• You do not have to explicitly draw H atoms.
8. Draw a structural formula for the ketal formed when two molecules of ethanol combine with one 2-butanone molecule.
• You do not have to consider stereochemistry.
• You do not have to explicitly draw H atoms.

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Answer to 587088

1) Chromic acid (K2Cr2O7 in H2SO4) easily oxidizes aldehydes to corresponding carboxylic acids (-CHO to -COOH).
So the product will be:

The net ionic reaction is as follows:

where R = (CH3)2CH-

2) Tollens' reagent contains the diamminesilver(I) ion, [Ag(NH3)2]+. Aldehydes reduce the diamminesilver(I) ion to metallic silver, forming a grey precipitate of silver or a silver mirror on the test tube. Due to alkaline condition, the aldehyde itself is oxidized to a salt of the corresponding carboxylic acid. ...

Solution Summary

This solution provides missing products and starting materials of several organic reactions, with adequate general discussion and chemical structures.

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