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The ionic mobility for some ions in wate...

The ionic mobility for some ions in water at 298 K is given as following
`{:("ions" , "ionic mobility"),(K^(+) , 7.616x10^(-4)),(Ca^(+2), 12.33xx10x^(-4)),(Br^(-) , 8.09xx10^(-4)),(SO_(45)^(-2), 16.58xx10^(-4)):}`
The equivalent conductance of `CaSO_(4)` at infinite dilution is

A

279

B

`28.51xx10^(-4)`

C

`31.82xx10^(-4)`

D

306

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Knowledge Check

  • For strong electrolytes the values of molar conductivities at infinite dilution are given below {:("Electrolyte",^^_(m)^(@) (Sm^(2 mol^(-1))),(BaCl_(2),280 xx 10^(-4)),(NaCl,126.5 xx 10^(-4)),(NaOH,48 xx 10^(-4)):} The molar conductance at infinite dilution for Ba(OH)_(2) is

    A
    `523 xx 10^(-4) Sm^(2) mol^(-1)`
    B
    `52.3 xx 10^(-4) Sm^(2) mol^(-1)`
    C
    `5.23 xx 10^(-4) Sm^(2) mol^(-1)`
    D
    `6.23 xx 10^(-4) Sm^(2) mol^(-1)`

  • Ionic conductances of H^(+) and SO_(4)^(2-) at infinite dilution are x and y S cm^(2) "equiv"^(-1) . Hence, equivalent conductance of H_(2)SO_(4) at infinite dilution is:

    A
    x+y
    B
    `2(x+y)`
    C
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    D
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  • Ionic conductance of H^(+) and SO_(4)""( 2–) at infinite dilution are x and y S "cm"^(2)" equiv "^(–1) . Hence, equivalent conductance of H_(2) SO_(4) at inifinite dilution will be:

    A
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    B
    2(x + y)
    C
    2x + y
    D
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