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Edexcel IGCSE Chemistry 2.36 acid and base definitions

Edexcel IGCSE Chemistry 2.36 acid and base definitions
Edexcel IGCSE Chemistry syllabusChemistry 4CH1First assessment 2019

Practise acid-base definition questions by choosing proton donor or acceptor wording for aqueous hydrochloric or sulfuric acid.

How this is tested

  • Distinguish proton donors from proton acceptors in acid-base reaction statements.
  • Apply the acid definition to choose how hydrochloric or sulfuric acid behaves.

Question 6(a)

[Maximum number: 1]

A student uses the reaction between magnesium and dilute hydrochloric acid to prepare crystals of hydrated magnesium chloride.

The student adds excess magnesium powder to hydrochloric acid.
This is the equation for the reaction.

Mg( s)+2HCl(aq)→MgCl2(aq)+H2( g)\mathrm{Mg}(\mathrm{~s})+2 \mathrm{HCl}(\mathrm{aq}) \rightarrow \mathrm{MgCl}_{2}(\mathrm{aq})+\mathrm{H}_{2}(\mathrm{~g})

How does hydrochloric acid behave when acting as an acid?

A

as an electron acceptor

B

as an electron donor

C

as a proton acceptor

D

as a proton donor