Write simple chemical tests and observations used to distinguish between the following compounds. (i) Propanal and propanone

Explanation

i. Propainal being an aldehyde reduces Tollen.s reagent to silver mirror, but propanone being a ketone does not. I!
ii. Acetophenone giyes yellow.precipitate of iodoform buth benzophenorne does noi.. `C_6 H_5 COCH_3+4 NaOH+31_2 rarr CHI_3+C_6 H_5 COONa+`
iii., Benzoic acid gives brisk effervescence with `Na HCO_3` due to the formation of `CO_dot r`. Phenol does not. `C_6 H_3 COOH+NaHCO_3^prime rarr C_6 H_5 CONa+CO_2+H_2 O`
iv. Benzoic. acid ort reaction with sodium bicarbonate gives out `CO_2^prime` gas with effervescence where as ethyl benzoate does-not.
v, Pentan -2zone gives yellowiprecipitate of iodoform. but pểntan-3-one does nòt. `CH_3 COCH_2 CH_2^2 CH_3+4 NaOH+3 I_2 stackrelrarrrarr`
Peutan-2-one ` ^* CHI_3+CH_2 CH_2 CH_2 COONa+3 Nal`
vi. Acetophenone gives yellow precipitate of jodoformi but benzaldéhyde doẹs not
vii. Ethanal forms yellow precipitate of iodoform while propanal does not `CH_3 CHO+4 NaOH+3 l_2 rarr CHl_3+HCOONa+3 Nal`
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