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Dhanwin , asked a question
Subject: Science , asked on 20/4/14

what is importance pH in our daily life

Aadhav , added an answer, on 23/5/12
257 helpful votes in Science

Importance Of pH In Everyday Life

Do you know why it is advised to clean your mouth after consuming food?

Acids are produced in the mouth due to the degradation of sugar and food particles by certain bacteria. As a result, the pH of mouth is lowered.

pH is the measure of the acidity or alkalinity of a solution. The pH scale varies from 0 to 14. A pH value from 0 to 6.9 represents an acidic solution, whereas a pH value from 7.1 to 14 represents a basic solution. A pH value of 7 represents neutral solutions.

Tooth enamel, which is made of calcium phosphate, is sensitive to pH.It does not dissolve in water (neutral pH), but gets corroded when pH in the mouth is below 5.5.

Hence, tooth decay starts when the pH of mouth is lower than 5.5.

Do You Know:

Toothpastes used by us for cleaning our teeth are generally basic in nature. Hence, it can neutralize excess acid present in the mouth and prevent tooth decay.

Let us study the role of pH in our daily life.

All living organisms are pH sensitive and can survive only in a narrow range of pH.

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Aadhav , added an answer, on 23/5/12
257 helpful votes in Science

the importance of pH in daily life are:

Are plants and animals pH sensitive?
Our body works within the pH range of 7.0 to 7.8. Living organisms can
survive only in a narrow range of pH change. When pH of rain water is
less than 5.6, it is called acid rain. When acid rain flows into the rivers, it
lowers the pH of the river water. The survival of aquatic life in such rivers
becomes difficult.

What is the pH of the soil in your backyard?
Plants require a specific pH range for their healthy growth.

pH in our digestive system
It is very interesting to note that our stomach produces hydrochloric
acid. It helps in the digestion of food without harming 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 called
antacids. One such remedy must have been suggested by you at the
beginning of this Chapter. These antacids neutralise the excess acid.
Magnesium hydroxide (Milk of magnesia), a mild base, is often used for
this purpose.

pH change as the cause of tooth decay
Tooth decay starts when the pH of the mouth is lower than 5.5. Tooth
enamel, made up of calcium phosphate is the hardest substance in the
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
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 plants through chemical warfare
Bee-sting leaves an acid which causes pain and irritation. Use of a mild base like baking soda
on the stung area gives relief. Stinging hair of nettle leaves inject methanoic acid causing burning pain.

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Aadhav , added an answer, on 23/5/12
257 helpful votes in Science

The balance of alkaline and acids (pH) in your body is very important. It:
helps you digest your food (stomach acid)
regulates your breathing rate (carbonic acid in your blood)
controls microorganisms on your skin
activates enzymes

Your blood has a pH which needs to be maintained between 7.35 and 7.45, or else serious illness and death may occur.
Your stomach has a regulated pH of hydrochloric acid which is essential in digesting foods.
Wasps and jellyfish have an alkaline sting, and bees have an acidic sting. Therefore with wasps there stings can be treated with vinegar, and bees with soap

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Preeti From S S K Khalsa Girls Sr Sec School, added an answer, on 11/5/14

Tell me importance of ph in our daily life

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Swetha From Soundararaja Vidyalaya, added an answer, on 21/7/14
1 unhelpful votes in Science

i dnt know

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