Chemistry 5070 · O Level · Identification of ions and gases
Identification of ions and gases — practice question
Select the required answers from the salts listed below.
aluminium sulfate
barium chloride
copper(II) nitrate
copper(II) sulfate
magnesium chloride
potassium iodide
potassium manganate(VII)
silver chloride
sodium bromide
Each salt may be chosen once, more than once, or not chosen at all.
State the salt:
(a)[1]
is made using a precipitation reaction
(b)[1]
produces a yellow flame-test colour
(c)[1]
forms a dark purple aqueous solution when dissolved
(d)[1]
has an aqueous solution that gives a white precipitate when it reacts with dilute sulfuric acid
(e)[1]
has an aqueous solution that reacts with aqueous bromine.
Worked solution & mark scheme
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “AgCl” …