English

The conductivity of 0.20 M solution of KCl at 298 K is 0.025 S cm−1. Calculate its molar conductivity

Advertisements
Advertisements

Question

The conductivity of 0.20 M solution of KCl at 298 K is 0.025 S cm−1. Calculate its molar conductivity.

Advertisements

Solution

κ (S cm−1) = 0.025 S cm−1 and molarity (mol L−1) = 0.20 M

`Molar conductivity (A_m)=K/(1000xxmolarity)=0.025/(1000xx0.20)=1.25xx10^(-4)Scm^2mol^(-1)`

shaalaa.com
  Is there an error in this question or solution?
2012-2013 (March) Delhi Set 1

RELATED QUESTIONS

Conductivity of 0.00241 M acetic acid is 7.896 × 10−5 S cm−1. Calculate its molar conductivity and if `Lambda_m^0` for acetic acid is 390.5 S cm2 mol−1, what is its dissociation constant?


Molar conductivity denoted by the symbol Λm is related to the conductivity of the solution by the equation (k is the conductivity and c is the concentration).


\[\ce{\Lambda^0_m(NH4OH)}\] is equal to ______.


When acidulated water (dil.H2SO4 solution) is electrolysed, will the pH of the solution be affected? Justify your answer.


Assertion: `"E"_("Ag"^+ //"Ag")` increases with increase in concentration of Ag+ ions.

Reason: `"E"_("Ag"^+ //"Ag")` has a positive value.


Assertion: Copper sulphate can be stored in zinc vessel.

Reason: Zinc is less reactive than copper.


Which of the following increases with the increase in the concentration of the solution?


The molar conductivity of 0.007 M acetic acid is 20 S cm2 mol−1. What is the dissociation constant of acetic acid? Choose the correct option.

\[\begin{array}{cc}
\end{array}\]\[\begin{bmatrix}
\ce{\Lambda^{\circ}_{H^+} = 350 S cm^2 mol^{-1}}\\
\ce{\Lambda^{\circ}_{CH_3COO^-} = 50 S cm^2 mol^{-1}}
\end{bmatrix}\]


The molar conductivity of CH3COOH at infinite dilution is 390 Scm2/mol. Using the graph and given information, the molar conductivity of CH3COOK will be:


Assertion (A): Molar conductivity decreases with increase in concentration.

Reason (R): When concentration approaches zero, the molar conductivity is known as limiting molar conductivity.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×