Home
Class 12
CHEMISTRY
The conductivity of 0.20 mol L^(-1) solu...

The conductivity of 0.20 mol `L^(-1)` solution of KCI is `2.48xx10^(-2)S cm^(-1)`. Calculate its molar conductivity and degree of dissociation `(alpha)`. Given `lambda_((K^(+)))^(@)=73.5 S cm^(-2)mol^(-1)and lambda_((CI^(-)))^(@)=76.5 mol^(-1)`
`lambda_((K^(+)))^(@)=73.5 S cm^(-2)mol^(-1)and lambda_((CI^(-)))^(@)=76.5 mol^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
`Lambda_(m)^(c )=124" S cm^(2) mol^(-1) ; a=0.82`
Molar conductivity `(Lambda_(m))=(1000xxk)/(M)=(1000xx(2.48xx10^(-2)" S " cm^(-1)))/((0.20" mol cm"^(-3)))=124" S " cm^(2) mol^(-1)`
Degree concetration `(alpha)=(Lambda_(m))/(Lambda_(m)^(alpha))=((124" S "cm^(2)mol^(-1)))/((150" S " cm^(2) mol^(-1)))=0.82`
Promotional Banner

Topper's Solved these Questions

  • ALCOHOLS AND PHENOLS

    DINESH PUBLICATION|Exercise COMPLETION QUESTION|2 Videos

  • ALCOHOLS AND PHENOLS

    DINESH PUBLICATION|Exercise NCERT In-Text Questions|9 Videos

  • ALDEHYDES AND KETONES

    DINESH PUBLICATION|Exercise Interger|5 Videos

Similar Questions

Explore conceptually related problems

The conductivity of 0.001 mol L^(-1) solution of CH_(3)COOH is 3.905xx10^(-5)S cm^(-1) . Calculate its molar conductivity and degree of dissociation (alpha) . ("Given":lamda_((H^(+)))^(@)=349.65 S cm^(2)mol^(-1)andlamda^(@)(CH_(3)COO^(-))=40.9 D cm^(2)mol^(-1))

The conductivity of 0.001 " mol "L^(-1) solution of CH_(3)COOH is 4.95xx10^(-5)" S "cm^(-1) . Calculate its molar conductance and degree of dissociation (alpha). "Given" lambda_((H^(+)))^(@)=349.6" S "cm^(2)mol^(-1), lambda_((CH_(3)COO^(-)))^(@)=40.95 cm^(2)mol^(-1)

If conductivity of 0.1 mol / dm^3 solution of KCl is 1.3 * 10^(-2) S cm^(-1) at 298 K then its molar conductivity will be

The conductivity of 0.1 mol L^(-1) KCl solution is 1.41 xx 10^(-3) S cm^(-1) . What is its molar conductivity (in S cm^(2) mol^(-1) ) ?

The molar conductivity of 0.25 mol L^(-1) methanoic acid is 46.1 S cm^(2) mol^(-1) . Calculate the degree of dissociation constant. Given : lambda_((H^(o+)))^(@)=349.6S cm^(2)mol^(-1) and lambda_((CHM_(3)COO^(c-)))^(@)=54.6Scm^(2)mol^(-1)