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In water, what happens to a base?


It forms hydrogen ions (H +).


It condensates.


It evaporates.


It forms hydroxide ions (OH–).



Which type of reaction happens when a base is mixed with an acid?


neutralization reaction


combustion reaction


metal-base reaction


spontaneous reaction

Verified Answer :

kntqt

it forms hydroxide ions , and a neutralization reaction .

Answer: 1. In water, a base forms hydroxide ions (\(OH^{-}\)

               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, \(NaOH \rightarrow Na^{+} + OH^{-}\)

Whereas an acid is a substance that dissociates into ions when dissolved in water to give hydrogen ions (\(H^{+}\)).

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, \(HCl + KOH \rightarrow KCl + H_{2}O\)

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.

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