Assertion (A): Concentrated sulphuric acid is kept in air tight bottles. Reason (R): Air contains impurities, therefore H2SO4 will get spoiled. 1. Both A and R are true and R is the correct explanation of A. 2. Both A and R are true but R is not the correct explanation of A. 3. A is true but R is false. 4. A is false but R is true.

Chemistry

Assertion (A): Concentrated sulphuric acid is kept in air tight bottles.
Reason (R): Air contains impurities, therefore H₂SO₄ will get spoiled.
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false but R is true.

Sulphuric Acid

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Answer

A is true but R is false.

Explanation— As concentrated sulphuric acid is hygroscopic and has a great affinity for water hence, it absorbs moisture from the atmosphere. Therefore, it is kept in air tight bottles. Hence, the assertion (A) is true.
The main concern to keep sulphuric acid in air tight bottles is to avoid moisture from entering, not impurities. Impurities in air do not significantly affect concentrated sulphuric acid. Hence, the reason (R) is false.

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Chemistry

Sulphuric Acid

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