JEE Main & Advanced Chemistry The p-block Elements-II Question Bank Halogen Family

  • question_answer Chlorine is liberated, when we heat [AFMC 1998]

    A) \[KMn{{O}_{4}}+NaCl\]

    B) \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}+Mn{{O}_{2}}\]

    C) \[P{{b}_{2}}{{(N{{O}_{3}})}_{4}}+Mn{{O}_{2}}\]

    D) \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}+HCl\]

    Correct Answer: D

    Solution :

    \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}+14HCl\,\,\to \,\,2KCl+2CrC{{l}_{3}}\]\[+7{{H}_{2}}O+3C{{l}_{2}}\]

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