Essential Chemistry for IGCSE - Chemical Reactions (Section 5 - No. 30)
Which of the following defines the Arrhenius definition of acids and bases?
An acid donates a proton; a base accepts a proton.
An acid produces hydrogen ions; a base produces hydroxide ions.
An acid accepts a pair of electrons; a base donates a pair of electrons.
An acid donates an electron; a base accepts an electron.
Explanation
Arrhenius defined acids as substances that produce hydrogen ions and bases as substances that produce hydroxide ions in water.
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