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This question is about acids, alkalis, and titrations.

Which ion do alkalis produce in aqueous solution?

$H+\text{H}^+$
$OH−\text{OH}^-$
$O2−\text{O}^{2-}$

[1]

What is the name of the reaction when an acid reacts with an alkali?

Decomposition
Neutralisation
Electrolysis
Displacement

[1]

Balance the chemical equation for the reaction between hydrochloric acid ( $HCl\text{HCl}$ ) and calcium hydroxide ( $Ca(OH)2\text{Ca(OH)}_2$ ): $‾HCl+Ca(OH)2→CaCl2+‾H2O\underline{\quad}\text{HCl} + \text{Ca(OH)}_2 \rightarrow \text{CaCl}_2 + \underline{\quad}\text{H}_2\text{O}$

[2]

Calcium hydroxide is alkaline. What is the most likely pH of a calcium hydroxide solution?

$2$
$5$
$7$
$12$

[1]

Which piece of equipment is most suitable to measure exactly $cm325.0\text{ cm}^3$ of calcium hydroxide solution into a conical flask as accurately as possible?

Beaker
Conical flask
Volumetric pipette
Measuring cylinder

[1]

Describe the steps a student should take to perform a titration to find the volume of hydrochloric acid needed to neutralise the calcium hydroxide solution, using a burette, a conical flask, and an indicator.

[4]

Reactions of acids Questions

Practise AQA GCSE Chemistry Reactions of acids with exam-style questions for Foundation and Higher tier. 43 questions covering Reactions of acids with metals, Neutralisation of acids and salt production, Soluble salts, The pH scale and neutralisation, Titrations (chemistry only), and Strong and weak acids (HT only), matched to the AQA GCSE Chemistry (8462) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.