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Electrochemistry — Chemistry STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceChemistryElectrochemistry4 Marks
Question
Distinguish between electronic and electrolytic conductors.
✓

Answer

Electronic conductors:
  1. The flow of electricity takes place by direct flow of electrons through the conductor.
  2. The conduction does not involve the transfer of a matter.
  3. No chemical change is involved during conduction.
  4. The resistance of the conductor increases and conductivity decreases with the increase in temperature.
  5. The conductance of metallic conductors is very high.
  6. Examples are solid or molten metals, such as Al, Cu, etc.
Electrolytic conductors:
  1. The electron transfer takes place by the migration of ions (cations and anions) of the electrolyte.
  2. The conduction involves the transfer of a matter.
  3. Chemical changes are always involved during the passage of an electric current.
  4. The resistance decreases and the conductivity increases with the increase in temperature.
  5. The conductance of the electrolytes is comparatively low.
  6. Examples are aqueous solutions of acids, bases or salts.

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