The pH value of the neutral solution is __________

The correct answer is 7.

Key Points

• A neutral solution has a pH value of 7.
• The pH scale ranges from 0 to 14, with 7 being neutral.
• Pure water, which is a neutral solution, has a pH value of 7 at 25°C.
• A pH value less than 7 indicates an acidic solution, while a pH value greater than 7 indicates a basic solution.

Additional Information

• pH Scale
  • The pH scale measures the acidity or basicity of a solution.
  • It is a logarithmic scale, meaning each whole number change represents a tenfold change in acidity/basicity.
  • A pH value of 7 is considered neutral, values below 7 are acidic, and values above 7 are basic or alkaline.
• Acids and Bases
  • Acids have a pH less than 7 and release hydrogen ions (H⁺) in solution.
  • Bases have a pH greater than 7 and release hydroxide ions (OH^-) in solution.
  • Common examples include hydrochloric acid (HCl) for acids and sodium hydroxide (NaOH) for bases.
• Neutralization
  • Neutralization is a chemical reaction between an acid and a base, producing water and a salt.
  • This reaction can help bring the pH of a solution closer to 7.
  • The general form of the reaction is: Acid + Base → Salt + Water.
• Importance of pH
  • pH is crucial in various fields including chemistry, biology, medicine, agriculture, and environmental science.
  • Many biological processes are pH-dependent, such as enzyme activity and cellular metabolism.
  • Soil pH affects plant growth and nutrient availability.