Chemistry 5070 · O Level · Identification of ions and gases
Identification of ions and gases — practice question
Pick answers for the questions below from the compounds listed here.
BaCl$_2$
C$_2$H$_4$
C$_3$H$_4$
C$_3$H$_8$
CO
CO$_2$
K$_2$SO$_4$
Na$_3$PO$_4$
SO$_2$
ZnSO$_4$
Any of these compounds may be used once, more than once, or not used at all.
(a)[1]
State a compound that is an acidic atmospheric pollutant released during volcanic eruptions.
(b)[1]
State a compound that belongs to the saturated hydrocarbon group.
(c)[1]
State a compound that dissolves in water to make an aqueous solution which forms a white precipitate when aqueous sodium hydroxide is added.
(d)[1]
State a compound that reduces iron(III) oxide to iron in the blast furnace.
(e)[1]
State a compound that contributes to eutrophication.
Worked solution & mark scheme
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Sulfur dioxide, SO₂” …