English
Karnataka Board PUCPUC Science 2nd PUC Class 12

Which of the statements about solutions of electrolytes is not correct?

Advertisements
Advertisements

Question

Which of the statements about solutions of electrolytes is not correct?

Options

  • Conductivity of solution depends upon size of ions.

  • Conductivity depends upon viscosiy of solution.

  • Conductivity does not depend upon solvation of ions present in solution.

  • Conductivity of solution increases with temperature.

MCQ
Advertisements

Solution

Conductivity does not depend upon solvation of ions present in solution.

Explanation:

Conductivity depends upon salvation of ions present in the solution. The greater the salvation of ions, the lesser is the conductivity.

shaalaa.com
  Is there an error in this question or solution?
Chapter 3: Electrochemistry - Exercises [Page 34]

APPEARS IN

NCERT Exemplar Chemistry Exemplar [English] Class 12
Chapter 3 Electrochemistry
Exercises | Q I. 7. | Page 34

RELATED QUESTIONS

Define “Molar conductivity”.


Resistance of conductivity cell filled with 0.1 M KCl solution is 100 ohms. If the resistance of the same cell when filled with 0.02 M KCl solution is 520 ohms, calculate the conductivity and molar conductivity of 0.02 M KCl solution. [Given: Conductivity of 0.1 M KCl solution is 1.29 S m-1 .]


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


Why conductivity of an electrolyte solution decreases with the decrease in concentration ?


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


Write mathematical expression of molar conductivity of the given solution at infinite dilution.


Calculate the degree of dissociation (α) of acetic acid if its molar conductivity (Λm) is 39.05 S cm2 mol−1.

(Given \[\ce{\lambda^{\circ}_{(H^+)}}\] = 349.6 S cm2 mol−1 and \[\ce{\lambda^{\circ}_{(CH_3COO^-)}}\] = 40.95 S cm2 mol−1)


In the plot of molar conductivity (∧m) vs square root of concentration (c1/2), following curves are obtained for two electrolytes A and B:

Answer the following:
(i) Predict the nature of electrolytes A and B.
(ii) What happens on extrapolation of ∧m to concentration approaching zero for electrolytes A and B?


Conductivity always decreases with decrease in concentration both, for weak and strong electrolytes because of the fact that ____________.


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


Solutions of two electrolytes ‘A’ and ‘B’ are diluted. The Λm of ‘B’ increases 1.5 times while that of A increases 25 times. Which of the two is a strong electrolyte? Justify your answer.


Solutions of two electrolytes ‘A’ and ‘B’ are diluted. The Λm of ‘B’ increases 1.5 times while that of A increases 25 times. Which of the two is a strong electrolyte? Justify your answer. Graphically show the behavior of ‘A’ and ‘B’.


An increase in equivalent conductance of a strong electrolyte with dilution is mainly due to :-


Assertion (A) : Conductivity decreases with decrease in concentration of electrolyte.

Reason (R) : Number of ions per unit volume that carry the current in a solution decreases on dilution.


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

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


The unit of molar conductivity is ______.


Which of the following solutions will have the highest conductivity at 298 K? 


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×