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NTA Abhyas NEET2020Chemistryp Block Elements (Group 15, 16, 17 & 18)Practice

A mixture of salt when heated with conc. H 2 S O 4 and M n O 2 , brown fumes are formed due to presence of which ion?

Options

  1. AB r -
  2. BN O 3 -
  3. CC l -
  4. DI -

Correct answer

A. B r -

Step-by-step solution

It is a lab method for the preparation of B r 2 e.g. 2 K B r + M n O 2 + H 2 S O 4 → B r 2 B r o w n g a s + 2 K H S O 4 + M n S O 4

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