Advertisements
Advertisements
Question
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.
Advertisements
Solution
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.
APPEARS IN
RELATED QUESTIONS
Write the equation taking place at the anode
Powdered sodium chloride (common salt) does not conduct an electric current, but it does so when ______ or when ______.
Give reason for the following:
Aluminium is extracted from its oxide by electrolytic reduction and not by convectional reducing agents.
Give reason for the following:
The ratio of hydrogen and oxygen formed at the cathode and anode is 2 : 1 by volume.
Write down the word or phrase from the bracket that will correctly fill in the blank in the following sentence:
We can expect that pure water ________________ (will / will not) normally conduct electricity.
Write the difference between with examples:
A strong electrolyte and a weak electrolyte
State your observation for the following electrolytic reaction:
Solid copper sulphate is electrolysed between platinum electrodes.
State your observation for the following electrolytic reaction
Aqueous copper sulphate is electrolysed between platinum electrodes.
Explain, why electrolysis is an example of redox reaction?
How electrolysis can be used in extraction of aluminium? Why aluminium cannot be reduced by conventional reducing agents?
Choose the correct answer from the option given below:
Electrolysis of acidulated water is used in the production of
Give one example of a substance which contain :
Ions only
If an electrolyte is described as a 'strong electrolyte' what does this mean?
Copy and complete the following sentence :
With platinum electrodes, hydrogen is liberated at the ______and oxygen at the _________ during the electrolysis of acidified water.
Complete the sentence by choosing correct words given in brackets.
Electrolysis is the passage of __________ (electricity/electrons) through a liquid or solution accompanied by a __________ ( physical/chemical ) change.
Write the equations of the reactions which take place at the cathode and anode when acidified water is electrolyzed.
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)
Pure water consists entirely of ______.
