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  • Which statement is not true with respect to nitrate ion test?Option: 1 A dark brown ring is formed at the junction of two solutions.

Which statement is not true with respect to nitrate ion test?

Option: 1

A dark brown ring is formed at the junction of two solutions.


Option: 2

Ring is formed due to nitroferrous sulphate complex.


Option: 3

The brown complex is \left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{5}(\mathrm{NO})] \mathrm{SO}_{4}\right.


Option: 4

Heating the nitrate salt with conc. \mathrm{H}_{2} \mathrm{SO}_{4}, light brown fumes are evolved.


Answers (1)

best_answer

In nitrate ion test, the Brown Ring is formed due to the formation of nitrosoferrous sulphate not nitroferrous sulphate . Hence statement given in Option (2) is incorrect.

Nitrosoferrous sulphate : \left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{5}(\mathrm{NO})] \mathrm{SO}_{4}\right..
                                             (Brown ring)

Option (2) is the answer.

Posted by

shivangi.bhatnagar

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