JEE Main & Advanced Chemistry Analytical Chemistry Question Bank Wet Test for Acid Radical

  • question_answer
    The gas which is absorbed by ferrous sulphate solution giving blackish brown colour is [AMU 1999]

    A) NO

    B) CO

    C) \[{{N}_{2}}\]

    D) \[N{{H}_{2}}\]

    Correct Answer: A

    Solution :

    \[3FeS{{O}_{4}}+N{{O}_{2}}+3{{H}_{2}}S{{O}_{4}}\to \]\[F{{e}_{2}}{{(S{{O}_{4}})}_{3}}+\underset{(\text{Black}\,\,\,\text{brown})}{\mathop{FeS{{O}_{4}}.NO}}\,+{{H}_{2}}O\]


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