(a)[1]
What colour is this precipitate?
(b)[1]
Complete the last column by calculating the mass of precipitate formed in each experiment.
(c)[3]
On the grid, plot mass of precipitate against the volume of $W$. Then draw two intersecting straight lines through the points.
(d(i))[1]
Use the data on your grid to infer the volume of $W$ that would give $1.20\text{ g}$ of precipitate.
(d(ii))[1]
Deduce the greatest mass of precipitate that is formed.
(d(iii))[1]
Deduce the smallest volume of $W$ that reacts fully to produce the maximum mass in (ii).
(e)[2]
Using your answer to (d)(iii) and the reaction equation, determine the concentration of the sulfuric acid, $W$, used in the experiment.