JEE Main & Advanced Chemistry The d-and f-Block Elements Question Bank Compounds of Transitional Elements

  • question_answer On adding KI to a solution of copper sulphate [CPMT 1973; NCERT 1977; MP PMT 1989]

    A) Cupric oxide is precipitated

    B) Metallic copper is precipitated

    C) Cuprous iodide is precipitated with liberation of iodine

    D) No change occurs

    Correct Answer: C

    Solution :

    Cuprous iodide is precipitated with liberation of iodine. \[2KI+CuS{{O}_{4}}\,\to \,Cu{{I}_{2}}+{{K}_{2}}S{{O}_{4}}+{{I}_{2}}\]

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