What is the importance of pH …

Are plants and animals pH sensitive? luving organisms can our body works within the pH range of7.0 fo 7 8 water is survive only in a narrow range of pH change When pH of ratn rivers. less than 5.6. it is called acid rain. When acid rain now into the rivers lowers the pH of the river water. The survival of aquatic life in such becomes difficult. ator paper you plants in Your regiom? pH in our digestive system it is very interesting to note that our stomach produces hydrochloric acti It helps in the digestion of food without harmang the stomach During indigestion the stomach produces too much acid and this causes pain and irritation. To get rid of this pain. people use bases antacids. One such remedy most have been suggested by you the beginning of this Chapter. These antacids neutralise the excess acid hyaroxide (Milk of magnesial, a mild base. is often used for this purpose. ions pH change as the cause of tooth decay and Tooth decay starts when the mouth lower Tooth duce made up of calcium phosphate is the hardest substance in the la ions body. It does not dissolve in water, but is corroded when the pH in the mouth is below 5.5. Bacteria present in the mouth produce acids by o be degradation of sugar and food particles remaining in the mouth after eating. The best way to prevent this is to clean the mouth after eating food. Using toothpastes, which are generally basic, for cleaning the teeth can neutralise the excess acid and prevent tooth decay self defence by animals and p