IB Chemistry SL Reactivity 3.1.3 Amphiprotic Species

Practise recognising a species that can donate a proton in one reaction and accept one in another. Confirm both possibilities from its formula, then write two balanced equations…

Syllabus
First assessment 2025
Objective
3.1.3
Level
SL

Exam points

  • identify a species containing a removable proton and a site able to accept another
  • write one equation showing acid behaviour and formation of its conjugate base
  • write a second equation showing base behaviour and formation of its conjugate acid

3.1.3—Amphiprotic species question 1

[Maximum number: 1]

Soluble acids and bases ionize in water.

Sodium hypochlorite ionizes in water.

OCl−(aq)+H2O(l)⇌OH−(aq)+HOCl(aq)\mathrm{OCl}^{-}(\mathrm{aq})+\mathrm{H}_{2} \mathrm{O}(\mathrm{l}) \rightleftharpoons \mathrm{OH}^{-}(\mathrm{aq})+\mathrm{HOCl}(\mathrm{aq})

Identify the amphiprotic species.

All question bank results loaded