The electrochemical equivalent of a metal is 1.3 x 10 -7 kgC -1 . The
PHYSICS
JAMB 1998
The electrochemical equivalent of a metal is 1.3 x 10-7kgC-1. The mass of the metal which 2.0 x 104C of electricity will deposit from a suitable electrolyte is
- A. 6.5 x 10-2kg
- B. 2.6 x 10-2kg
- C. 6.5 x 10-3kg
- D. 2.6 x 10-3kg
Correct Answer: D. 2.6 x 10-3kg
Explanation
m = QZ
= 2 x 104 x 1.3 x 10-7
= 2.6 x 10-3kg
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