CBSE 2022 · Region 2 · Set 1 · Q1 · 2 marks
How will you carry out the following conversions : (Any two)(i)Propanal to Propane(ii)Ethanal to But-$\displaystyle 2$-enal(iii)Ethanoic acid to ethanamide
How will you carry out the following conversions : (Any two)
(i)
Propanal to Propane
(ii)
Ethanal to But-$\displaystyle 2$-enal
(iii)
Ethanoic acid to ethanamide
Marking-scheme solution
(i) \(\displaystyle \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CHO} \xrightarrow[\text { conc. } \mathrm{HCl}]{\mathrm{Zn}(\mathrm{Hg})} \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{3}\)
\(\displaystyle \rule{0pt}{1em}\)
(ii) \(\displaystyle \mathrm{CH_3CHO} \xrightarrow{\text{dil NaOH}} \mathrm{CH_3}\underset{\textstyle\underset{\textstyle\mathrm{OH}}{|}}{\mathrm{CH}}-\mathrm{CH_2}-\mathrm{CHO} \xrightarrow[-\mathrm{H_2O}]{\Delta} \mathrm{CH_3}-\mathrm{CH}=\mathrm{CH}-\mathrm{CHO}\)
\(\displaystyle \rule{0pt}{1em}\)
(iii) \(\displaystyle \mathrm{CH_3COOH} \xrightarrow[\Delta]{\mathrm{NH_3}} \mathrm{CH_3CONH_2}\)
Aldehydes, Ketones and Carboxylic AcidsChemical Reactions of Aldehydes, Ketones and Carboxylic AcidsApplyvery_short_answermedium
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CBSE Class 12 Chemistry past-paper question from the 2022board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.