Excess solid zinc carbonate is added to dilute hydrochloric acid in a beaker.
zinchydrochloriczinccarboncarbonate+acid→chloride+dioxide+water \begin{array}{ccccccc} \text{zinc} & & \text{hydrochloric} & & \text{zinc} & & \text{carbon} \\ \text{carbonate} & + & \text{acid} & \rightarrow & \text{chloride} & + & \text{dioxide} \\ & & & & & + & \text{water} \end{array} zinccarbonate+hydrochloricacid→zincchloride++carbondioxidewaterZinc chloride is formed in solution.
Describe how a sample of pure, dry zinc chloride crystals can be obtained from the mixture of zinc chloride solution and excess solid zinc carbonate in the beaker.
276 exam-style questions on Edexcel GCSE Chemistry 4.1 Acids, covering 4.1.1 Acids, alkalis and the pH scale, 4.1.2 Hydrogen ion concentration and pH, 4.1.3 Dilute and concentrated, weak and strong acids, 4.1.4 Bases, alkalis and the reactions of acids, 4.1.5 Chemical tests for hydrogen and carbon dioxide, 4.1.6 Neutralisation as a reaction of acids with bases, 4.1.7 Preparing soluble salts, and 4.1.8 Solubility rules and preparing insoluble salts. Each one has a worked solution and a mark scheme showing where the marks go.