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What are strong and weak acids? In the following list of acids, separate strong acids from weak acids. Hydrochloric acid, citric acid, acetic acid, nitric acid, formic acid, sulphuric acid.

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Answer:

Strong acid: The acid that ionises completely in aqueous solution, thus producing a high concentration of H_{3}O^{+} ions, is called a strong acid, e.g., HCl, H_{2}SO_{4}, HNO_{3} etc

Weak acid Weak acid ionises only partially in aqueous solution and thus it produces ions as well as molecules, e.g., acetic acid, carbonic acid

Strong Acid Weak Acid
Hydrochloric acid Citric acid
Nitric acid Acetic acid
Sulphuric acid Formic acid

 

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