What happens when an acid or a base is mixed with water?

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SSC CHSL 2021 (Held On : 24 May 2022 Shift 1)
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  1. Decrease in the concentration of atoms (H2O+/OH) per unit volume
  2. Decrease in the concentration of ions (H3O+/OH) per litre volume
  3. increase in the concentration of ions (H3O+/OH) per unit volume
  4. Decrease in the concentration of ions (H3O+/OH) per unit volume

Answer (Detailed Solution Below)

Option 4 : Decrease in the concentration of ions (H3O+/OH) per unit volume
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SSC CHSL Exam 2023 Tier-I Official Paper (Held On: 02 Aug 2023 Shift 1)
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100 Questions 200 Marks 60 Mins

Detailed Solution

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The correct answer is to Decrease the concentration of ions (H3O+/OH–) per unit volume.

Key Points

  • When an acid or a base is mixed with water decrease the concentration of ions (H3O+/OH) per unit volume.
  • Mixing an acid with water results in a decrease in the concentration of ions per unit volume called dilution.
  • Dilution is the process of the addition of solvent, which decreases the concentration of the solute in the solution.
  • In both dilution and concentration, the amount of solute stays the same.
  • The solute is a substance that is added to a solvent to form a solution.

Additional Information

  • A solvent is a substance that dissolves the solute particles during the formation of a solution.
  • Concentration is the process of removal of the solvent, which increases the concentration of the solute in the solution.
  • Acidification is a process of controlling the growth of undesirable microorganisms, including pathogens.
  • The mixing of both an acid and a base is called neutralization.
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