Question 46
Conduction through Liquids and GasesCalculate the mass of the copper deposited during electrolysis when a current of 4A passes through a copper salt for 2 hours. [ece of copper z=3.3 × 10−7kgC−1]
- A.9.5 × 10−7kg
- B.9.5 × 10−3kg
- C.2.9 × 10−4kg
- D.2.9 × 105kg
Show the answer and explanation
Answer: B (9.5 × 10−3kg)
Explanation
m = zIt = 3.3 × 10−7 × 4 × 7200 ≈ 9.5 × 10−3 kg.