1. Soluble salts can be prepared by reacting a dilute acid with a …
Which methods listed above could be used to prepare copper(II)sulfate?
A. 1, 2 and 3
B. 1 and 2 only
C. 1 and 3 only
D 2 and 3 only
Q2-3: Zinc chloride is produced by adding an excess of zinc oxide to a beaker of dilute hydrochloric acid. The mixture is stirred and the acid neutralized.
2. How could you tell when all the acid is neutralized?
A. the reaction stops fizzing
B. the solution turns green
C. the solid changes colour
D. the solid stops disappearing
3. The products of the reactions are:
A. zinc chloride + water
B. zinc chloride + hydrogen
C. zinc sulfate + water
D. zinc sulfate + hydrogen
Zinc sulfate crystals can be prepared by reacting excess zinc carbonate with dilute sulfuric acid.
The excess zinc carbonate is then removed from the solution and the solution is partially evaporated and cooled.