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Question

Explain the importance of pH testing in everyday life?


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Solution

pH

  • pH is used to measure the basicity and acidity of a solution.
  • The amount of hydrogen ion concentration in a solution determines its pH.
  • Mathematically, it is given by a formula, pH=-log[H+]
  • The pH scale is used to measure the relative acidity and alkalinity of solutions.
  • The neutral value pH depends on temperature it can be lower than 7 if the temperature increases above25°C.

pH testing in everyday life:

  1. Our digestive system works in the pH range of 7-7.8., therefore for the proper functioning of our digestive system, it is important to maintain its pH,
  2. Plants require optimum pH( 6.3 to 7.3) for their growth, therefore, the pH of the soil should be checked frequently.
  3. This pH is important for the activation of the enzyme pepsin, which helps in the digestion of protein in food.
  4. Human blood has a pH range of 7.0 to 7.8, which is important for basic survival. If pH changes in blood proper function of our body get disturbed.

Figure : pH scale

The pH ranges from 1 to 14, a pH lower than 7 represents an acidic condition, and pH more than 7 represents a basic condition.


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