Answer: 1. In water, a base forms hydroxide ions ([tex]OH^{-}[/tex]
2. Neutralization reaction happens when a base is mixed with an acid.
Explanation:
1. A base is a substance which when dissolved in water dissociates into hydrogen ions and hydroxide ions.
For example, [tex]NaOH \rightarrow Na^{+} + OH^{-}[/tex]
Whereas an acid is a substance that dissociates into ions when dissolved in water to give hydrogen ions ([tex]H^{+}[/tex]).
Therefore, we can conclude that in water, base forms hydroxide ions (OH–).
2. When an acid reacts with a base then it yields into the formation of salt and water.
For example, [tex]HCl + KOH \rightarrow KCl + H_{2}O[/tex]
This reaction of neutralizing acid with base to give salt and water is known as neutralization reaction.
pH of the reaction becomes equal to 7 when a strong base is treated with strong acid.
Thus, we can conclude that when a base is mixed with an acid neutralization reaction occurs.
