A student has planned to prepare acetanilide | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The chemical reaction for the preparation of acetanilide from aniline is: $C_6H_5NH_2 + (CH_3CO)_2O \rightarrow C_6H_5NHCOCH_3 + CH_3COOH$.$1$. Ca

Vedclass · Accepted Answer

$81.5$

Vedclass · Answer

(A) The chemical reaction for the preparation of acetanilide from aniline is: $C_6H_5NH_2 + (CH_3CO)_2O ightarrow C_6H_5NHCOCH_3 + CH_3COOH$.$1$. Calculate the moles of aniline used:$n_{	ext{aniline}} = \frac{	ext{mass}}{	ext{molar mass}} = \frac{9.3 \ g}{93 \ g/mol} = 0.1 \ mol$.$2$. Since the stoichiometry of the reaction is $1:1$, the theoretical yield of acetanilide is $0.1 \ mol$.$3$. Calculate the actual moles of acetanilide obtained:$n_{	ext{acetanilide}} = \frac{11 \ g}{135 \ g/mol} \approx 0.08148 \ mol$.$4$. Calculate the percentage yield:$	ext{Percentage yield} = \left( \frac{	ext{Actual yield}}{	ext{Theoretical yield}} ight) 	imes 100 = \left( \frac{0.08148 \ mol}{0.1 \ mol} ight) 	imes 100 = 81.48 \% \approx 81.5 \%$.

List-$I$ (Compounds)	List-$II$ (Reactions)
$A. \ CH_3(CH_2)_3NH_2$	$(i)$ Alkaline hydrolysis
$B. \ CH_3C\equiv CH$	$(ii)$ With $KOH$ (alc.) and $CHCl_3$ produces bad smell
$C. \ CH_3CH_2COOCH_3$	$(iii)$ Gives white ppt. with ammoniacal $AgNO_3$
$D. \ CH_3CH(OH)CH_3$	$(iv)$ With Lucas reagent cloudiness appears after $5 \ minutes$

List-$I$	List-$II$
$A$. Amide	$I$. Carbylamine reaction
$B$. Nitrile	$II$. Hinsberg's reagent
$C$. $C_6H_5SO_2Cl$	$III$. Hofmann's bromamide reaction
$D$. $1^{\circ}$-Amine	$IV$. $LiAlH_4$

$A$ student has planned to prepare acetanilide from aniline using acetic anhydride. The student has started from $9.3 \ g$ of aniline. However, the student has managed to obtain $11 \ g$ of dry acetanilide. The $\%$ yield of this reaction is $.....$ (in $\%$)

Similar Questions

What are $X$ and $Y$ respectively in the following set of reactions?

Match the following:
List-$I$ List-$II$
$A$. Amide $I$. Carbylamine reaction
$B$. Nitrile $II$. Hinsberg's reagent
$C$. $C_6H_5SO_2Cl$ $III$. Hofmann's bromamide reaction
$D$. $1^{\circ}$-Amine $IV$. $LiAlH_4$

Which set of products will be obtained in the following reactions?
$RCN \xrightarrow{\text{reduction}} (a)$
$RCN \xrightarrow[(ii) H_2O]{(i) CH_3MgBr} (b)$
$RNC \xrightarrow{\text{hydrolysis}} (c)$
$RNH_2 \xrightarrow{HNO_2} (d)$

How will you convert:
$(i)$ Benzene into aniline
$(ii)$ Benzene into $N,N$-dimethylaniline
$(iii)$ $Cl-(CH_2)_4-Cl$ into hexane-$1,6$-diamine?

Vedclass Test Series

Exam Paper Generator

Online Exam Module