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  • Chromyl chloride vapours are dissolved in NaOH and lead acetate solution is added to it after acidifying with Acetic acid, thenOption: 1 The solution

Chromyl chloride vapours are dissolved in NaOH and lead acetate solution is added to it after acidifying with Acetic acid, then

Option: 1

The solution will remain colourless


Option: 2

The solution will become dark green


Option: 3

A yellow solution will be obtained


Option: 4

A yellow precipitate will be obtained


Answers (1)

best_answer

Chromyl Chloride dissolves in \text{NaOH} and imparts yellow colour to the solution owing to the formation of Sodium Chromate

\mathrm{CrO _{2} Cl _{2}+4 NaOH \longrightarrow Na _{2} CrO _{4}+2 NaCl +2 H _{2} O}

Upon acidifying the solution and adding lead acetate, a yellow precipitate of Lead Chromate is obtained. The reaction is given below:

\mathrm{\left( CH _{3} COO \right)_{2} Pb + Na _{2} CrO _{4} \longrightarrow \underset{{Lead Chromate}}{PbCrO _{4}} +2 CH _{3} COONa}

Hence, the correct answer is Option (4)

Posted by

Divya Prakash Singh

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