During electrolysis, when the mass of product produced (m) is plotted against the electric charge (Q) in faraday's law, which of the following plots is correct?
Correct answer: B. A straight line with a positive slope passing through the origin
- A. A horizontal line
- B. A straight line with a positive slope passing through the origin
- C. A curve that starts at the origin and curves upwards
- D. A straight line with a negative slope
Explanation
According to Faraday's first law of electrolysis, the mass of a substance deposited is directly proportional to the quantity of charge passed (m ∝ Q). A plot of m versus Q will therefore be a straight line passing through the origin with a positive slope.
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