Intext questions VI — task. Science CBSE, Class 10.

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1. How is the concentration of hydronium ions \(H_3O^+\) affected when a solution of an acid is diluted?

Strength of acid increases
Strength of acid will not be affected
When an acid solution is diluted, only hydrogen ions are affected.
Strength of acid decreases

2. How is the concentration of hydroxide ions \(OH^–\) affected when excess base is dissolved in a solution of sodium hydroxide?

Excess base decreases \(OH^-\) ion concentration.
As sodium hydroxide is a base, it does not affect the concentration of hydroxide ions \(OH^–\) .
Excess base increases \(OH^-\) ion concentration.
When excess base is dissolved in sodium hydroxide solution, salt and water are formed.

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