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J & K CET Medical J & K - CET Medical Solved Paper-2008

  • question_answer
    The stoichiometry of the following reaction is\[{{K}_{2}}{{S}_{2}}{{O}_{8}}(aq)+2KI(aq)\to 2{{K}_{2}}S{{O}_{4}}(aq)+{{I}_{2}}(aq)\]

    A)  2 : 2                                      

    B)  1 : 1

    C)  1 : 2                                      

    D)  2 : 1

    Correct Answer: C

    Solution :

                    \[{{K}_{2}}{{S}_{2}}{{O}_{8}}(aq)+2KI(aq)\xrightarrow{{}}2{{K}_{2}}S{{O}_{4}}(aq)+{{I}_{2}}(aq)\]In this reaction one mole of 1^20 g reacts with 2 moles of\[KI,\]hence the stoichiometry of this reaction is 1 : 2.


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