A student reacts dilute sulfuric acid with copper(II) carbonate to obtain a pure, dry sample of blue copper(II) sulfate crystals.
Dilute sulfuric acid is colourless.
Copper(II) carbonate is an insoluble green powder.
The equation for the reaction is shown.
$\text{H}_2\text{SO}_4\text{(aq)} + \text{CuCO}_3\text{(s)} \rightarrow \text{CuSO}_4\text{(aq)} + \text{CO}_2\text{(g)} + \text{H}_2\text{O}\text{(l)}$
(a(i))[1]
Name the apparatus the student uses for measuring the acid.
(a(ii))[1]
Name the apparatus into which the student places the acid.
(b)[2]
Describe two observations that show the reaction is complete and the copper(II) carbonate is in excess.
reaction complete [BLANK]
copper(II) carbonate is in excess [BLANK]
(c)[2]
Describe the look of the residue on the filter paper and the filtrate after filtration is finished.
the look of the residue on the filter paper [BLANK]
the look of the filtrate [BLANK]
Worked solution & mark scheme
This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Graduated cylinder” …