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VIT Engineering VIT Engineering Solved Paper-2011

  • question_answer
    The equivalent conductances of two ions at infinite dilution in water at \[{{25}^{o}}C\] are given below \[\wedge _{B{{a}^{2+}}}^{o}=127.00\,Sc{{m}^{2}}/equiv\] \[\wedge _{C{{l}^{-}}}^{o}=76.00\,Sc{{m}^{2}}/equiv\] The equivalent conductance (in \[S\,c{{m}^{2}}\]/equiv) of \[BaC{{l}_{2}}\] at infinite dilution will be

    A)  \[203\]            

    B)  \[279\]

    C)  \[205.5\]          

    D)  \[139.5\]

    Correct Answer: B

    Solution :

      \[\wedge _{(BaC{{l}_{2}})}^{\infty }=\wedge _{(B{{a}^{2+}})}^{\infty }+2\wedge _{(C{{l}^{-}})}^{\infty }\] \[=127+2\times 76\] \[=127+152\] \[=279Sc{{m}^{2}}/equiv\]


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