Describe pH and pH scale. What is a pH value of pure water and bile juice. What is the importance of pH in our digestive system and to stop the tooth decay?
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Answers
Definition of ph and ph scale:
Acidity and alkalinity are measured with a logarithmic scale called pH.
The pH scale measures how acidic or basic a substance is.
The pH scale ranges from 0 to 14.
A pH of 7 is neutral. A pH less than 7 is acidic. A pH greater than 7 is basic.
The pH values of bile juice and pure water:
pH of bile juice between 7 to 8. it slihtly alkine.
pH of pure water is 7 at 25⁰c.
Importance of pH in our digestive system and in the tooth decay:
The pH of our stomach is critical to the digestion of many nutrients and acts as the first line of defense against harmful bacteria and viruses. The stomach is a reservoir of strong acid, with a much lower pH than in any other part of our digestive system.
The pH of our tooth decay starting is if it is less than 5.5.
pH value let us know the nature of the tooth. it hrlps us to know about our tooth decay. tooth decay starts if bacteria is present and our teeth are acidic in nature.
Hope this helps you.
Gastric Juice = 1 - 3
More Information :-
Vinegar = 2.4 - 3.4
Tears = 7.4
Human urine = 4.8 - 8.4
Blood plasma = 7.3 - 7.4
Boiled water = 6.5625