JAMB Chemistry 2023 Objective — Question 7
Question 7 of 40 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2023 Objective paper, with the correct answer and a full explanation.
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How many coulombs of electricity will be needed to deposit 22.22 g of silver?
- A. 20212.3 C
- B. 14189 C
- C. 25719 C
- D. 19854 CCorrect
Explanation
Ag⁺ + e⁻ → Ag. Q = (mass/M) × F × n = (22.22/108) × 96500 × 1 = 0.2057 × 96500 = 19853.98 ≈ 19854 C.
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