CH_3CHO and C_6H_5CH_2CHO can be distinguishe | vedclass

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(B) $CH_3CHO$ and $C_6H_5CH_2CHO$ are both aldehydes and react with Tollen's reagent,Fehling's solution,and Benedict's solution,so these cannot distin

Vedclass · Accepted Answer

Iodoform test

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(B) $CH_3CHO$ and $C_6H_5CH_2CHO$ are both aldehydes and react with Tollen's reagent,Fehling's solution,and Benedict's solution,so these cannot distinguish them.$CH_3CHO$ contains a $CH_3CO-$ group,which gives a positive Iodoform test with $I_2$ and $NaOH$,forming a yellow precipitate of $CHI_3$.$CH_3CHO + 3 I_2 + 4 NaOH \longrightarrow CHI_3 (	ext{yellow ppt}) + HCOONa + 3 NaI + 3 H_2O$$C_6H_5CH_2CHO$ does not contain the $CH_3CO-$ group and does not give the Iodoform test.$	herefore$ The Iodoform test is the correct method to distinguish between them.

$CH_3CHO$ and $C_6H_5CH_2CHO$ can be distinguished chemically by

Similar Questions

Aldehydes that do not undergo aldol condensation are:
$1$. $CH_3CH_2CHO$ (propanal)
$2$. $Cl_3CCHO$ (trichloroethanal)
$3$. $HCHO$ (methanal)
$4$. $CH_3CHO$ (ethanal)
$5$. $C_6H_5CHO$ (benzaldehyde)

What is the structure of $C$?

What is $X$ in the following reaction?
$2 CH_3COCH_3 \stackrel{Ba(OH)_2}{\longrightarrow} X$

In the following reaction:
$\text{Aldehyde} + \text{Alcohol} \xrightarrow{HCl} \text{Acetal}$
$HCHO \qquad ^tBuOH$
$CH_3CHO \qquad MeOH$
The best combination for the formation of acetal is:

The compound obtained when acetaldehyde reacts with dilute aqueous sodium hydroxide exhibits

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