List the compound(s) that gave a positive reaction with CrO3. What type of react

Question

List the compound(s) that gave a positive reaction with CrO3. What type of reaction did these compounds undergo? What type of reagent is CrO3? Propose a possible product from the reaction of each of the compounds with CrO3.

List the compound(s) that gave a positive DNP test. What similarities exist between the structures of these compounds?

Choose from these compounds: 2-pentanone, 3-pentanone, benzaldehyde, 1-hexanol, 4-methyl-2-pentanol, 3,5-dimethylphenol, p-anisic acid, m-anisidine, N-methylaniline, and N,N-diethylaniline.

Explanation / Answer

The compounds that would give a positive reaction with CrO3 would be = 1-hexanol, 4-methyl-2-pentanol.

This is an oxidation reaction.

Compounds that would give positive test with DNP reagent are = 2-pentanone, 3-pentanone.

These upon reaction yield dinitrophenylhydrazone. These compounds have a reactive C=O group in it.

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