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  • benzaldehyde reacts with  a) ch3cho in presence of dil naoh  b) h2n-nh-benzene  c) conc Naoh 

Benzaldehyde reacts with 

a) ch3cho in the presence of dil NaOH 

b) h2n-nh-benzene 

c) conc NaOH 

Answers (1)

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a) Benzaldehyde reacts with CH3CHO in the presence of dilute NaOH (Benzoin condensation)

$\text{C}_6\text{H}_5\text{CHO} + \text{CH}_3\text{CHO} \xrightarrow{\text{Dilute NaOH}} \text{C}_6\text{H}_5\text{CHOHCOH}$

b) Benzaldehyde reacts with H2N-NH-Benzene (Schiff base formation)

$\text{C}_6\text{H}_5\text{CHO} + \text{C}_6\text{H}_5\text{NH-NH}_2 \rightarrow \text{C}_6\text{H}_5\text{CH=NNH}\text{C}_6\text{H}_5$

c) Benzaldehyde reacts with concentrated NaOH (Aldol condensation)

$2 \, \text{C}_6\text{H}_5\text{CHO} \xrightarrow{\text{Conc. NaOH}} \text{C}_6\text{H}_5\text{CH=CHCHO}$

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Saniya Khatri

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