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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
Choose the correct answer from the options given below :
The particles present in strong electrolytes are :
(A) Only molecules
(B) Mainly ions
(C) Ions and molecules
(D) Only atoms
Write equations for the reactions taking place at the two electrodes (mentioning clearly the name of the electrode) during the electrolysis of acidified copper sulphate solution with copper electrodes.
What is the difference between:
Electrolytic dissociation and ionisation.
State the electrode reaction at the anode during electrolysis of:
very dilute sulphuric acid.
State the electrode reaction at the anode during electrolysis of:
magnesium chloride (molten).
Write down the word or phrase from the bracket that will correctly fill in the blank in the following sentence:
Pure water consists entirely of ________________ (ions/ molecules).
Complete the sentence by choosing correct word given in bracket.
Electrolysis is the passage of ___________________
(electricity / electrons)
State your observation for the following electrolytic reaction
Aqueous copper sulphate is electrolysed between platinum electrodes.
Choose the correct answer from the option given below:
In electrolysis of molten lead bromine anode is made up of
Define or explain the term: Electrolysis.
Give one example of a substance which contain :
both ions and molecules.
Write down the word or phrase from the given options that will correctly fill in the blanks in the following sentence:
We can expect that pure water _______ normally conduct electricity.
Copy and complete the following sentence :
With platinum electrodes, hydrogen is liberated at the ______and oxygen at the _________ during the electrolysis of acidified water.
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 |
Identify the following reactions as either oxidation or reduction : O + 2e- → O-2
Identify the following reactions as either oxidation or reduction : K - e- → K+
State your observation of the following case:
At the cathode when acidified aqueous copper sulphate solution is electrolyzed with copper electrodes.
Electrolysis of acidulated water is an example of ______.
In the electrolysis method of boron extraction the cathode is made of ______.
108 g of silver (molar mass 108 g mol-1) is deposited at cathode from AgNO3 (aq) solution by a certain quantity of electricity. The volume (in L) of oxygen gas produced at 273 K and 1 bar pressure from water by the same quantity of electricity is ______.
