Multiple choice

The characteristic properties of an acid are due to

  1. ammonium ion

  2. hydronium ions

  3. hydroxide ions

  4. hydride ions

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

H3O+ is responsible for the  characteristic properties of an acid . The hydronium ion is a hydrogen ion in association with a molecule of water. In a water molecule, the oxygen atom has two pairs of unshared electrons in its outermost shell. The hydrogen ion does not have any electron in its valence shell. Hence, it shares a pair of electrons from the oxygen atom by means of co-ordinate co-valency to form a hydronium ion.