Chemistry
The diagram given below shows electrolysis of water. Answer the following questions :
(a) Label A, B, C, D, E and F.
(b) Why is acidulated water used ?
(c) What is the ratio by volume for the gases collected ?
Hydrogen
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Answer
(a)
A → Hydrogen (H2)
B → Oxygen (O2)
C → Electrolytic Cell
D → Acidulated Water (Electrolyte)
E → Cathode
F → Anode
(b) Acidulated water is used as pure water is a bad conductor of electricity. When a small amount of acid, alkali or salt is added to it, only then it conducts electricity.
(c) Ratio by volume of the gases collected
Hydrogen : Oxygen = 2 : 1
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