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How is acid defined?

Last updated date: 16th Jul 2024
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Hint: Before answering this question, we should know the word “acid” is derived from a Latin word that means sour. So, acids have a sour taste. It helps to distinguish acid from the other compounds. One should not ingest acid as it is dangerous and poisonous and could lead to death. It should not be tasted.

Complete answer:
The hydrogen-containing substance which donates its proton to another substance is known as acid. An acid donates its ${{H}^{+}}$ion and still doesn’t lose its energy.
Some physical properties define acids:
When acid binds with the base, it becomes neutral. This can also lead to the formation of salt and water. It happens mainly when strong acid reacts with strong bases. It performs a neutralization reaction.
The acids conduct electricity due to the presence of mobile ions, the acids that strongly conduct electricity are strong whereas the acids that weakly conduct the electricity are weak.
Acids are soluble in water.
The acid solution changes blue litmus paper to red.
The pH range of acid is less than 7.
The acid solutions are mostly corrosive.
It reacts with metal carbonates to form salt, carbon dioxide, and water.

The uses of acids are-
The diluted solution of acetic acid i.e, vinegar which helps in various household works. The main use of it is a food preservative.
Citric acid is also used as a food preservative. It is an important component of lemon juice and orange juice.
Sulphuric acid is used in batteries. Batteries help to start the engines of automobiles which have this acid. It is also used in dyes, paints, and fertilizers.
Phosphoric acid is used in soft drinks.