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Acids Bases And Salts Essay

737 words - 3 pages

Acid, Base and Salt
Substances can be divided into three types – Acid, Base and Salt.
ACID: acids are substances that taste sour in nature. For example – lemon (citric acid), curd (lactic acid), vinegar (acetic acid), etc. The chemical nature of such substances is known as ACIDIC.
BASE: bases are substances which are soapy to touch and bitter in taste. For example; soap or soap solution, baking soda, washing soda, etc. The chemical nature of substances that contain base is known as BASIC.
INDICATOR: Indicator is a special substance that shows the acidic or basic nature of a substance by change in its colour. It is important to use indicators because some substances can be highly ...view middle of the document...

When this acidic rain water falls over earth, it is known as acid rain. Acid rain damages the buildings and is harmful for plants and animals.

Neutralisation:
When solution of acid is mixed with the solution of base, both of them neutralize each other and a third substance; called salt; is formed. Such phenomenon is called neutralization or neutralization reaction. The solution formed is neither acidic nor basic in nature. Such solution is known as neutral solution.
Salt formed because of neutralization reaction may be acidic or basic in nature. Acidic or Basic nature of salt depends upon the strength of acid and base. In neutralization reaction heat is evolved.
Example - Sodium hydroxide is a base and hydrochloric acid is an acid. When both these solutions are mixed they both neutralize each other and common salt (Sodium chloride) is formed. Since, it is an exothermic reaction, so reaction mixture becomes slightly hot. The reaction involved in this can be written as follows:

Neutralization Reaction in Everyday Life:
There are many uses of neutralization reaction in everyday life.
Acidity: when we take excessive intake of oily foods, our stomach produces more amount of...

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