Acid reacting with Bases/ Alkalis (Neutralisation Reaction )
Acid + Base → Salt + Water
- When Sodium Hydroxide ( NaOH) , a base, reacts with Hydrochloric acid (HCl) , it forms the salt, Sodium Chloride (NaCl) and Water.
NaOH (aq) + HCl(aq) → NaCl (aq) + H
- When Sodium Hydroxide (NaOH) reacts with Sulphuric Acid (H 2 SO 4 ), Sodium sulphate (Na 2 SO 4 ) and Water (H 2 0) are formed.
2NaOH (aq) + H
(aq) → Na
(aq) + 2H
- In all these neutralisation reactions , the byproduct water is formed due to the combination of hydrogen ions present in the acid and hydroxide ions present in the base. The formation of water in an acid-base reaction occurs as follows:
H + (aq) + OH - (aq) → H 2 O (l)