(i) Explain how anhydrous copper sulphate can be used to detect the presence of moisture in a liquid.
(ii) What is meant by amphoteric oxide?
(iii) Give the chemical name and formula of chloride of lime.
(i) Explain how anhydrous copper sulphate can be used to detect the presence of moisture in a liquid
(i) Anhydrous copper sulphate is white in colour but turns blue when comes in contact with water. Thus, it can be used to detect the presence of moisture.
(ii) Oxide which can act both as an acid and as a base is called amphoteric oxides.
(iii) Calcium oxychloride (CaOCl2)