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Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2011

  • 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 \[{{K}_{2}}{{S}_{2}}{{O}_{8}}\] reacts with 2 moles of \[Kl,\]hence the stoichiometry of this reaction is\[1:2\]


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