In the electrolysis of water,a) name the gas collected at anode and cathodeb) why is the volume off gas collected at one electrode double than the other?c) what would happen if dil h2so4 is not added to water?
Answers
Hey there
Here is your answer:
In the electrolysis of water,
a)(1) the gas collected at anode is OXYGEN.
(2) the gas collected at the cathode is HYDROGEN.(both cathode and hydrogen has the letter 'h' in it ;) )
b)the volume of gas collected at the cathode-hydrogen is double the volume of gas collected at the anode-oxygen because:
In a molecule of water (H2O) there are 2 atoms of hydrogen and one and one atom of oxygen.
C) for electrolysis to occur, water has to conduct electricity.Distilled water is a poor conductor of electricity and adding a few drops dilute sulphuric acid will make the medium more conducting....
Hope it helps!
Answer:
In electrolysis of water :
a ) . Hydrogen gas collected at cathode. And oxygen gas gas collect at anode.
b ) . We know that in water there is 2 hydrogen atom and 1 oxygen atom. That's why volume of gas collected at one electrode double than the other.
c ) . Pure water is a bad conductor of electricity when we add drops of dil sulphuric acid we make it a good conductor of electricity.