Post-UTME Chemistry 2019 Objective — Question 17
Question 17 of 20 from the Post-UTME Screening (Post-UTME) Chemistry 2019 Objective paper, with the correct answer and a full explanation.
Advertisement
The solution of a zinc salt and a white precipitate which dissolved in excess ammonia solution. The solubility of the zinc salt in aqueous ammonia can be explained by the
- A. amphoteric nature of zincCorrect
- B. formation of the zincate ion
- C. solubility product of the zinc salt
- D. electrovalent nature of the zinc salt
Explanation
Zinc hydroxide is amphoteric and dissolves in excess ammonia (forming a soluble complex ion), a behaviour generally attributed to zinc's amphoteric nature.
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.