Chemistry 5070 · O Level · Elements, compounds and mixtures
Elements, compounds and mixtures — practice question
Pick from the chlorides below to answer the questions.
ammonium chloride
calcium chloride
carbon tetrachloride
copper(II) chloride
hydrogen chloride
magnesium chloride
zinc chloride
Each chloride may be used once, used more than once, or not used at all.
Which chloride is this?
(a)[1]
is a solid with colour.
(b)[1]
gives a gas that turns damp red litmus paper blue when it reacts with warm aqueous sodium hydroxide.
(c)[1]
forms a strong acid when it dissolves in water.
(d)[1]
has a cation carrying a +1 charge.
(e)[1]
has a simple molecular structure comparable to methane?
Worked solution & mark scheme
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Answer: Copper(II) chloride” …