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importance of pH in everyday life. …

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importance of pH in everyday life. 2.3.1 in your book.Read the intext and book exercise questions in this topic.
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Meghna Thapar 5 years, 6 months ago

  • Importance of pH in Everyday life:

pH change and survival of animals -

  1. Our body works well within a narrow pH range of 7.0 to 7.8.
  2. When the pH of rain water is less than 5.6, it is known as acid rain.
  3. When  this  acid  rain  flows  into  rivers,  it  lowers  the  pH  of the river  water making the survival  of aquatic life difficult.

pH in our digestive system

  1. Our stomach produces hydrochloric acid which helps in the digestion of food without harming the stomach.
  2. Sometimes excess acid is produced in the stomach which causes indigestion.
  3. To get rid of this pain, bases called antacids are used.
  4. Antacids are a group of mild bases which react with the excess acid and neutralise it.
  5. Commonly used antacids are magnesium hydroxide [Mg(OH)2] and sodium bicarbonate[NaHCO3].
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