(a) Define electrolysis. (b) Classify each of the following substances as an electrolyte or a non-electrolyte (i) sugar solution; (ii) kerosene; (iii) alkal...
Question 1 Report
(a) Define electrolysis.
(b) Classify each of the following substances as an electrolyte or a non-electrolyte
(i) sugar solution;
(ii) kerosene;
(iii) alkaline solution
(iv) lemon fruit juice.
Answer Details
(a) Electrolysis is the chemical decomposition of a substance (an electrolyte) brought about by passing an electric current through it when in the molten state or in aqueous solution.
(b) Classification
| Substance | Classification |
|---|---|
| (i) Sugar solution | Non-electrolyte |
| (ii) Kerosene | Non-electrolyte |
| (iii) Alkaline solution | Electrolyte |
| (iv) Lemon fruit juice | Electrolyte |
Electrolytes (alkaline solution and lemon juice, which is acidic) conduct electricity because they contain free mobile ions, whereas sugar solution and kerosene contain no free ions and so do not conduct.
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