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NTA Abhyas 2020

Exam: NTA Abhyas
Year: 2020
Subject: Chemistry
Chapter: s Block Elements

NTA Abhyas 2020 · Chemistry · s Block Elements

NaOCl is used as a bleaching agent and sterilising agent. It can be...

NaOCl

is used as a bleaching agent and sterilising agent. It can be synthesised by the action of

Options

A $NaClwith{H}_{2}O$
B $N{H}_{4}ClwithNaOH$
C $C{l}_{2}$ with cold and dilute $NaOH$
D $C{l}_{2}$ with hot and concentrated $NaOH$

Correct answer

C. $C{l}_{2}$ with cold and dilute $NaOH$

Step-by-step solution

NaOCl is used as a bleaching agent and sterilising agent. It is formed by the action of

C{l}_{2}

with cold and dilute NaOH.

2NaOH + C{l}_{2} ⟶ NaCl + NaOCl + {H}_{2}O

& Cold and dil.

6NaOH + 3C{l}_{2} ⟶ 5NaCl + NaCl{O}_{3} + 3{H}_{2}O

& & Hot and conc.

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