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प्रश्न
Write down the changes that will be seen in each instance and explain the reason behind them.
Dilute H2SO4 was taken in an electrolytic cell and an electric current was passed through it.
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उत्तर
In dilute H2SO4, H+ and `"SO"_4^(2-)` ions are produced due to dissociation. Electric current passes through these ions. During this process H2 gas is produced at the negative side, and O2 gas is produced at the positive side.
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संबंधित प्रश्न
Give appropriate scientific reasons for Electrolysis is of molten lead bromide is considered to be a redox reaction.
State the electrode reaction at the anode during electrolysis of:
Fused lead bromide.
Give reason for the following:
Lead bromide undergoes electrolytic dissociation in the molten state but is a non-electrolyte in the solid state.
Complete the sentence by choosing correct word given in bracket.
Electrolysis is the passage of ___________________
(electricity / electrons)
From the given list :
NaCl, NaOH, H2O (pure), NH4OH, urea, dil.H2SO4, glucose, acetic acid, H2CO3.
Select :
a) Substances which will behave as strong electrolytes.
b) Substances which will behave as weak electrolytes.
c) Substances which are non-elctrolytes.
Write the difference between with examples:
A strong electrolyte and a weak electrolyte
Explain, why electrolysis is an example of redox reaction?
With reference to the electrolysis of acidulated water, answer the following :
a) why distilled water is a non- electrolyte?
b) What is the electrolytic cell called?
c) State what you would observe at the (i) Cathode (ii) Anode
d) Summarize the electrode reactions.
e) why is electrolysis of acidulated water considered as an example of catalysis?
How electrolysis can be used in extraction of aluminium? Why aluminium cannot be reduced by conventional reducing agents?
Name : A base which is not alkali
Choose the correct answer from the option given below:
Which among the following anions will discharge with ease at anode?
Copy and complete the following table which refers to two practical applications of electrolysis.
| Anode | Electrolyte | Cathode | |
| Silver plating of a spoon | Solution of potassium argentocyanide | ||
| Purification of copper |
Write the equations of the reactions which take place at the cathode and anode when acidified water is electrolyzed.
Identify the following reactions as either oxidation or reduction : K - e- → K+
During the electrolysis of molten lead bromide, which of the following takes place?
Differentiate between the terms strong electrolyte and weak electrolyte (stating any two differences)
In the electrolysis method of boron extraction the cathode is made of ______.
When the sample of copper with zinc impurity is to be purified by electrolysis, the appropriate electrodes are:
X - \[\ce{HCl <=> H^{1+} + Cl-}\] (in solution state)
Y - \[\ce{PbBr2 <=> Pb^{2+} + 2Br^{1-}}\] (in molten state)
From the above reaction X or Y, identify the reaction which exhibit:
electrolytic dissociation
