An organic Compound C3H6O does not give silver mirror with tollen's reagent but gives yellow precipitation with NaOH and I2 . Identify the compound and write the reactions involved.

The given organic compound is $\mathrm{C}{}_3\mathrm{H}{}_6\mathrm{O}$ with the following properties:

1. No silver mirror with Tollen’s reagent: Rules out aldehydes (which give a positive test).
2. Yellow precipitate with $\mathrm{NaOH}$ and $\mathrm{I}{}_2$: Confirms the presence of a methyl ketone (iodoform test).

Identification:

The compound is propanone (acetone) ($\mathrm{CH}{}_3\mathrm{COCH}{}_3$).

Propanone (Acetone)Propanone (Acetone)

Reactions:

1. Iodoform test (yellow precipitate): $$\mathrm{CH}{}_3\mathrm{COCH}{}_3+3\mathrm{I}{}_2+4\mathrm{NaOH}\to \mathrm{CHI}{}_3(\mathrm{yellow}\mathrm{ppt})+\mathrm{CH}{}_3\mathrm{COONa}+3\mathrm{NaI}+3\mathrm{H}{}_2\mathrm{O}$$

CHI₃ (Iodoform)CHI₃ (Iodoform)

acetoneacetone+3I₂+4NaOHheatiodoformiodoform+CH₃COONa+33NaI+33H₂O

2. No reaction with Tollen’s reagent (since it is a ketone, not an aldehyde): $$\text{No silver mirror formed.}$$