Edexcel IAL Chemistry 3.P11 Selecting laboratory apparatus

Match apparatus to the required operation and precision, label functional parts in diagrams and include seals, supports or pump connections that make the setup work.

Exam points

Draw reduced-pressure filtration with Büchner funnel, sealed flask, paper and pump.
Select apparatus such as a pestle and mortar or support beaker for its stated function.
Justify measuring or preparation apparatus by the operation and precision required.

[Maximum number: 1]

A student carried out an experiment to identify the metal M in the hydrated carbonate $\mathrm{M}_{2} \mathrm{CO}_{3} \cdot 10 \mathrm{H}_{2} \mathrm{O}$ . A solution was made by dissolving 3.56 g of the hydrated metal carbonate in distilled water and making the volume up to $250.0 \mathrm{~cm}^{3}$ in a volumetric flask. $25.0 \mathrm{~cm}^{3}$ of this solution was placed in a conical flask and titrated with $0.100 \mathrm{~mol} \mathrm{dm}^{-3}$ of hydrochloric acid. The equation for the reaction is

\mathrm{M}_{2} \mathrm{CO}_{3}(\mathrm{aq})+2 \mathrm{HCl}(\mathrm{aq}) \rightarrow 2 \mathrm{MCl}(\mathrm{aq})+\mathrm{H}_{2} \mathrm{O}(\mathrm{l})+\mathrm{CO}_{2}(\mathrm{~g})

Name a suitable piece of apparatus to measure the $25.0 \mathrm{~cm}^{3}$ of solution.

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3.P11—Selecting laboratory apparatus question 1