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`0*05 mol L^(-1) NaOH` विलयन के कॉलम का विधुत प्रतिरोध `5*55xx10^(3) ohm` है | इसका व्यास 1cm है | इसकी प्रतिरोधक, चालकता तथा मोलर चालकता का परिकलन कीजिये |

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`r=1/2=0*5 cm `
अनुप्रस्थ काट का क्षेत्रफल `=api r^2= 3*14xx0*5^2 cm^2 l = 50 cm=0*785 xx 10^(-4) m^(2)`
(i) प्रतिरोध `R=(rhol)/a`
या `rho=(R*a)/l = (5*55xx10^(3)Omegaxx0*785 xm^2)/(50 cm )`
प्रतिरोध `(rho)=87*135 Omega cm`
(ii) छलकता `=K=1/rho=(1/*87*135)S cm^(-1)`
`=0.0011476 cm^(-1)`
या ` K= 0*01148 S cm^(-1)`
(iii) मोलर चालकता `lamda_m=(kxx1000)/C cm^3L^(-1)`
`C=0*05 mol L^(-1)`
`lamda_m=(0*01148 S cm^(-1)xx1000xm^3L^-1)/(0*05 molL^-1)=229*6 S cm^2 mol^(-1)`

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