why is dilute sulphuric acid not used a dehydrating agent nor as an oxidizing agent?
why is conc sulphuric acid used a dehydrating and oxidizing agent?

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Solution

H₂SO₄ has strong affinity for water. If it is concentrated, that is, more concentration of sulphuric acid is present, then it can remove water from the compound.
But when it is diluted, then large amount of water is already present around it, therefore it will not act as dehydrating agent.
H₂SO₄act as oxidising agent by gaining electron to form SO₂ , H₂Oand SO₄^2-, thus it itself is reduced.
2H₂SO₄ + 2e^- $\to$ SO₂ + 2H₂O + SO₄²^-

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Q. Why is sulphuric acid used as a dehydrating agent?

Conc. sulphuric acid is used as a dehydrating agent due to its ___ nature.

(a) Which property of sulphuric acid accounts for its use as a dehydrating agent ?

(b) Concentrated sulphuric acid is both an oxidizing agent and a non-volatile acid. Write on equation each to illustrate the above mentioned properties of sulphuric acid.

(c) (i) Name the process used for the large scale manufacture of sulphuric acid.
(ii) Which property of sulphuric acid accounts for its use as a dehydrating agent?
(iii) Concentrated sulphuric acid is both an oxidizing agent and non-volatile acid. Write one equation each to illustrate the above mentioned properties of sulphuric acid.

Describe the reactions that show
(i) Concentrated sulphuric acid is a non-volatile acid.
(ii) Concentrated sulphuric acid acts as a dehydrating agent.
(iii) Concentrated sulphuric acid is an oxidising agent.
(iv) Dilute sulphuric acid behaves as dibasic acid.

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why is dilute sulphuric acid not used a dehydrating agent nor as an oxidizing agent?why is conc sulphuric acid used a dehydrating and oxidizing agent?

why is dilute sulphuric acid not used a dehydrating agent nor as an oxidizing agent?
why is conc sulphuric acid used a dehydrating and oxidizing agent?