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प्रश्न
State the observations at the anode and at the cathode during the electrolysis of copper sulphate solution using copper electrodes.
उत्तर
Observations:
Anode: Nothing gets deposited on the anode because the copper anode dissolves during the reaction as Cu2+ ions are formed
Cathode: Reddish brown Cu is deposited.
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संबंधित प्रश्न
Molten lead bromide conducts electricity. It is called an ______. It is composed of lead ______ and bromide ______. The lead ions are ______ charged and are called ______. The bromide ______ are ______ charged and are called ______.
Name a base which is a weak electrolyte.
Classify the following substance:
Acetic acid
Select the correct answer from the choices a,b,c and d which are given. Write only the letter corresponding to the correct answer.
A compound which liberates reddish brown gas around the anode during the electrolysis in its molten state is:______________
Select the correct answer from the choices a,b,c and d which are given. Write only the letter corresponding to the correct answer.
During ionization metals lose electrons, this change can be called _______________.
Copper sulphate solution is electrolyzed using copper electrodes. Study the diagram given alongside and answer the questions that follow.
- Which electrode to your left or right is known as the oxidizing electrode and why?
- Write the equation representing the reaction that occurs.
- State two appropriate observations for the above electrolysis reactions.
Give appropriate scientific reasons for the following statement :
Zinc oxide can be reduced to zinc by using carbon monoxide, but aluminium oxide cannot be reduced by a reducing agent.
Give appropriate scientific reasons for the following statement:
During electrolysis of molten lead bromide, graphite anode is preferred to other electrodes.
Name the metallic ions that should be present in the electrolyte when an article made copper is to be electroplated with silver
Select the ion, that would get selectively discharge from the aqueous mixture of the ions listed below :
\[\ce{SO^{2-}_{4}}\], \[\ce{NO^{-}_{3}}\], \[\ce{OH-}\]
