JAMB Chemistry 2021 Objective — Question 22
Question 22 of 41 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2021 Objective paper, with the correct answer and a full explanation.
Advertisement
What mass of silver will be deposited at the cathode when a current of 5 A is passed through a solution of AgNO₃ for 1 hour, 1 minute and 1 second? [Ag = 108, 1F = 96500 C]
- A. 20.5 gCorrect
- B. 10.25 g
- C. 41 g
- D. 5 g
Explanation
t = 1×3600 + 1×60 + 1 = 3661 s. Q = It = 5 × 3661 = 18305 C. m = (M × Q)/(n × F) = (108 × 18305)/(1 × 96500) = 20.5 g.
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.