Question

What do you understand by base and acid? Write two applications of pH in daily life.

Hint:

pH plays an important role in various chemical processes, including in the body, agriculture, and food industries.

Answer 1

Acids:
An acid is a substance that releases hydrogen ions (H⁺) when dissolved in water. Acids have a pH value less than 7. Examples of acids include hydrochloric acid (HCl) and sulfuric acid (H₂SO₄).

Bases:
A base is a substance that releases hydroxide ions (OH⁻) when dissolved in water. Bases have a pH value greater than 7. Examples of bases include sodium hydroxide (NaOH) and calcium hydroxide (Ca(OH)₂).

Two Applications of pH in Daily Life:
1.
pH in Agriculture:
The pH of soil affects plant growth. Certain plants thrive in acidic soil, while others grow better in alkaline conditions. Monitoring the pH of the soil is important for effective farming practices.
2.
pH in Cooking:
The pH level is crucial in cooking, especially in processes like baking, where the acidity or alkalinity of ingredients like baking soda and vinegar can influence the texture and rise of baked goods.

Conclusion:
Acids and bases are substances that affect the pH of a solution. The pH scale has various applications in our daily life, including agriculture and cooking, where it plays a vital role in plant growth and food preparation.