Name a different item of apparatus that could replace a pipette and still measure $20.0\,\text{cm}^3$ of solution K accurately.
Name the vessel used to prepare solution L.
A pipette is used to transfer $25.0\,\text{cm}^3$ of solution L into a conical flask. Name the other piece of apparatus used together with the pipette.
State which liquid should be used to rinse the burette out before it is filled with $\text{KOH}(aq)$.
Explain why the conical flask is put on a white tile.
State the colour change of the methyl orange indicator at the end-point. The colour changes from [BLANK] to [BLANK].
Use the burette diagrams to fill in the table, tick the best titration results, and calculate the average volume of $\text{KOH}(aq)$ used.
Calculate the number of moles of $\text{KOH}$ present in the average volume of $0.100\,\text{mol dm}^{-3}\,\text{KOH}(aq)$ used in (e).
The reaction equation is $2\text{KOH} + \text{H}_2\text{SO}_4 \rightarrow \text{K}_2\text{SO}_4 + 2\text{H}_2\text{O}$. Use it to work out the number of moles of $\text{H}_2\text{SO}_4$ in $25.0\,\text{cm}^3$ of solution L.
Calculate the number of moles of $\text{H}_2\text{SO}_4$ present in $250\,\text{cm}^3$ of solution L.
Deduce the number of moles of $\text{H}_2\text{SO}_4$ in $20.0\,\text{cm}^3$ of solution K.
Calculate the concentration of solution K in $\text{mol dm}^{-3}$.
State whether the average titration volume of $\text{KOH}(aq)$ becomes smaller, larger or stays the same when 30 drops of methyl orange are used instead of 3 drops, and explain your answer.