discuss the uses of PH in normal life?
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pH AND PLANTS
Plants require a specific pH of the soil for their proper growth. Plants cannot grow in too alkaline or too acidic soils. Therefore, for proper cultivation of crops it is important to have knowledge of the pH of the soil. If the soil is too acidic then its pH can be raised by adding lime (or slaked lime) which neutralizes the excess acid in the soil.

Similarly, if the soil is too alkaline then its pH can be lowered by adding gypsum or some other substance which can neutralize the excess alkali present in the soil.
pH IN OUR DIGESTIVE SYSTEM
The medium in our stomach is highly acidic and has pH around 1.2. Our stomach produces hydrochloric acid which helps in digestion of food. Sometimes the stomach produces too much hydrochloric acid. Excess acid in the stomach causes pain and irritation. It can also cause ulcers in the digestive system. The condition of excess acid in the stomach is referred to as hyperacidity. In order to treat hyperacidity, a patient is advised to take antacid tablets or antacid suspensions. The antacid preparations contain some mild base such as magnesium hydroxide as the active component which neutralizes the excess acid in the stomach and thus controls the pH in the stomach.
Mg(OH)2 + 2HCl à MgCl2 + 2H2O
pH AND TOOTH DECAY
Tooth enamel is the hardest substance in our body. It is made up of calcium tetraoxophosphate(V). It does not dissolve in water and mildly acidic solutions. However, it gets corroded slowly when pH in the mouth is below 5.5. When we eat food, some food particles remain sticking to the teeth. Bacteria present in the mouth produce acid by the degradation of sugar and food particles present in the mouth. This results in lowe1ing of pH in the mouth which promotes tooth decay. In order to prevent tooth decay avoid eating sugary foods. The mouth should be cleaned after eating food. Cleaning the teeth using toothpastes also helps in preventing tooth decay. Toothpastes are generally basic, therefore, they neutralize the excess acid in the mouth and thus prevent tooth decay.
The knowledge of pH also helps us in maintaining the proper acidity in many products such as shampoos, medicines, etc. pH of rain water can be used to detect the extent of certain pollutant gases in the atmosphere.
I hope it will help you
Plants require a specific pH of the soil for their proper growth. Plants cannot grow in too alkaline or too acidic soils. Therefore, for proper cultivation of crops it is important to have knowledge of the pH of the soil. If the soil is too acidic then its pH can be raised by adding lime (or slaked lime) which neutralizes the excess acid in the soil.

Similarly, if the soil is too alkaline then its pH can be lowered by adding gypsum or some other substance which can neutralize the excess alkali present in the soil.
pH IN OUR DIGESTIVE SYSTEM
The medium in our stomach is highly acidic and has pH around 1.2. Our stomach produces hydrochloric acid which helps in digestion of food. Sometimes the stomach produces too much hydrochloric acid. Excess acid in the stomach causes pain and irritation. It can also cause ulcers in the digestive system. The condition of excess acid in the stomach is referred to as hyperacidity. In order to treat hyperacidity, a patient is advised to take antacid tablets or antacid suspensions. The antacid preparations contain some mild base such as magnesium hydroxide as the active component which neutralizes the excess acid in the stomach and thus controls the pH in the stomach.
Mg(OH)2 + 2HCl à MgCl2 + 2H2O
pH AND TOOTH DECAY
Tooth enamel is the hardest substance in our body. It is made up of calcium tetraoxophosphate(V). It does not dissolve in water and mildly acidic solutions. However, it gets corroded slowly when pH in the mouth is below 5.5. When we eat food, some food particles remain sticking to the teeth. Bacteria present in the mouth produce acid by the degradation of sugar and food particles present in the mouth. This results in lowe1ing of pH in the mouth which promotes tooth decay. In order to prevent tooth decay avoid eating sugary foods. The mouth should be cleaned after eating food. Cleaning the teeth using toothpastes also helps in preventing tooth decay. Toothpastes are generally basic, therefore, they neutralize the excess acid in the mouth and thus prevent tooth decay.
The knowledge of pH also helps us in maintaining the proper acidity in many products such as shampoos, medicines, etc. pH of rain water can be used to detect the extent of certain pollutant gases in the atmosphere.
I hope it will help you
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pH is important whenever someone needs to know how acidic or alkaline something is. Often is is sufficient to know that the pH is less than 7 (acidic) or greater than 7 (alkaline), but sometimes the exact number needs to be known. Here's just a few examples: -- Soil pH: some plants thrive in acidic soil, while others need neutral or alkaline soil. A gardener sometimes needs to know the pH of his soil to determine if certain plants can grow in it. -- Pools: the pH is one of many factors that is tested in a swimming pool. Outside of a certain range, it can not only get un- comfortable, but it can allow algae to thrive. -- Food: The food industry has very strict specifications for a lot of its raw materials, such as corn syrup, dyes, flavorings, etc. One of those specifications is pH. Since cooking is basically a series of chemical reactions, a dye whose pH is out of specification can ruin an entire batch of cookies. -- Hair: shampoos are always going on about being "pH balanced". Personally, I think it's a lot of hooey, but some folks believe that hair needs shampoo of precisely the right pH. Many personal care products, in fact, need to have their pH controlled during manufacture, because if the medium is too acidic or too basic, often gels will collapse, foam will not foam, and nice suspensions will separate. Now, if you're talking about a *chemist's* every day life, that's a whole different ball game. Let's just say I carry a roll of universal pH indicator paper in the pocket of my lab coat at all times!
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