Which one of the following used for purification of aldehydes?

Question

Which one of the following used for purification of aldehydes? (A) NaOCl (B) NaHSO 3 (C) C 6 H 5 SO 2 Cl (D) Na 2 SO 4

Tardigrade Admin · Accepted Answer

Carbonyl compounds (aldehydes) form solid additive products with

N a H S O_{3}

which get separated out. The solid bisulphites of carbonyl

compounds on hydrolysis by dilute acid regenerate carbonyl compound. Thus, this property is used for purification of carbonyl compounds. Aldehyde and ketones form addition compounds with

N a H S O_{3}

where as impurities donot. On hydrolysis, we get pure aldehyde and ketone back.

Q. Which one of the following used for purification of aldehydes?

$N a OCl$

$N a H S O_{3}$

$C_{6} H_{5} S O_{2} Cl$

$N a_{2} S O_{4}$

Q. Which one of the following used for purification of aldehydes?

NaOCl

NaHSO3​

C6​H5​SO2​Cl

Na2​SO4​

$N a OCl$

$N a H S O_{3}$

$C_{6} H_{5} S O_{2} Cl$

$N a_{2} S O_{4}$