Home
Class 12
CHEMISTRY
A conductivity cell is platinized to...

A conductivity cell is platinized to

A

avoid temperature effect

B

avoid capacitance of the cell

C

avoid polarization effect

D

prolonf its life

Text Solution

Verified by Experts

The correct Answer is:
C
Electrodes of the cell are made of platinum and are coatedx freshly electrolytically with finely divided platinum black before use to minimize the polarization effect (i.e. change of resistance of solution near the electrodes due to change of concentration of electrolyte).
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    R SHARMA|Exercise Follow-up Test 8|20 Videos

  • ELECTROCHEMISTRY

    R SHARMA|Exercise Follow-up Test 9|11 Videos

  • ELECTROCHEMISTRY

    R SHARMA|Exercise Follow-up Test 6|12 Videos

  • COORDINATION COMPOUNDS

    R SHARMA|Exercise Archives|56 Videos

  • GENERAL PRINCIPALS AND ISOLATION OF ELEMENTS

    R SHARMA|Exercise Arechives|16 Videos

Similar Questions

Explore conceptually related problems

A conductivity cell is used to measure the conductance of electrolyte . It makes use of conductivity of water which does not contain any ions. The cell constant of conductivity cell is determined. If the cell constant is 0.40 cm^(-1) , the conductivity of 0.051 M NaCl solution having R=1850 ohm is equal to

At 25^(@)C , the resistance of 0.01 N NaCl solution is 200 ohm . If cell constant of the conductivity cell is unity, then the equivalent conductance of the solution is:

The conductance of 0.0015 M aqueous solution of a weak monobasic acid was determined by using a conductivity cell consisting of platinized Pt electrodes. The distance between the electrodes is 120 cm with an area of cross-section of 1 cm^(2) . The conductance of this solution was found to be 5xx10^(-7) S . The pH of the solution is 4. Calculate the value of limiting molar conductivity.