JAMB Chemistry 2007 Objective — Question 23
Question 23 of 50 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2007 Objective paper, with the correct answer and a full explanation.
Advertisement
What happens when a zinc rod is immersed in copper (II) tetraoxosulphate(VI) solution?
- A. Electrons flow from copper to zinc
- B. The zinc rod remains undissolved
- C. The copper generates more copper ions
- D. The blue colour of the solution disappearsCorrect
Explanation
Zinc, being higher in the electrochemical series, displaces copper: Zn + Cu2+ -> Zn2+ + Cu, so the blue Cu2+ colour fades as copper is deposited.
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.