Chemistry · May / June 2017 · Paper 11 · Question 5
5070Identification of ions and gases
An aqueous solution of zinc chloride is tested by adding reagents. Which observation is correct?
- Aacidified aqueous barium nitrate — forms a white precipitate
- Baqueous ammonia — forms a white precipitate, soluble in excess of the reagent
- Caqueous sodium hydroxide — forms a white precipitate, insoluble in excess of the reagent
- Dpowdered copper — forms a grey precipitate
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Correct answer: B. aqueous ammonia — forms a white precipitate, soluble in excess of the reagent
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