What happens when concentrated sulphuric acid is added to glucose-Glucose is converted to fructoseWater is removed from the glucoseSO2 is evolvedReaction doesn-t occur

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Standard X

Chemistry

Sulphuric acid as Dehydrating Agent

What happens ...

Question

What happens when concentrated sulphuric acid is added to glucose?

Glucose is converted to fructose

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Water is removed from the glucose

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SO₂ is evolved

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Reaction doesn’t occur

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Solution

The correct option is B Water is removed from the glucose
Sulphuric acid have strong affinity for water as a result it is used as a dehydrating agent. So, on adding sulphuric acid to glucose water is removed from it in the form of steam.

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Similar questions

Give reasons for the following:
(i) In the contact process, sulphur trioxide formed is dissolved in 98% sulphuric acid and not in water.
(ii) When solution of sulphur dioxide is exposed to air, it gets converted to sulphuric acid.
(iii) When diluting concentrated sulphuric acid, the acid should be added to water and not water to the acid.
(iv) When concentrated sulphuric acid is exposed to air, its volume increases and it becomes slightly dilute.
(v) Sulphuric acid can form two kinds of salts with sodium chloride.
(vi) When barium chloride is added to dilute sulphuric acid, a white precipitate is formed.
(vii) When carbon is heated with concentrated sulphuric acid, carbon dioxide is formed.
(viii) Ammonia gas cannot be dried by passing through concentrated sulphuric acid.
(ix) When concentrated sulphuric acid is added to sugar/glucose, a black mass is left behind.
(x) Concentrated sulphuric acid should not be added to oxalic acid or formic acid in the open laboratory.
(xi) When concentrated sulphuric acid is added to blue crystalline copper sulphate, it turns powdery white.
(xii) Concentrated sulphuric acid must be stored in airtight bottles.
(xiii) Cotton clothes get burnt with concentrated sulphuric acid.
(xiv) H₂SO₄ cannot be prepared by heating sodium sulphate with conc. HCl or HNO₃.

What do you see when concentrated sulphuric acid is added to copper sulphate-5-water. (You are not required to say what is happening, nor is it necessary to name the products.)

Q. What happens when concentrated sulphuric acid is added to glucose?

What happens when concentrated Sulphuric Acid is added to Sodium Chloride?

Q. What happens when sulphuric acid is diluted by adding water to concentrated

H_{2} S O_{4}

. Explain.

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What happens when concentrated sulphuric acid is added to glucose?

The correct option is B Water is removed from the glucoseSulphuric acid have strong affinity for water as a result it is used as a dehydrating agent. So, on adding sulphuric acid to glucose water is removed from it in the form of steam.

The correct option is B Water is removed from the glucose
Sulphuric acid have strong affinity for water as a result it is used as a dehydrating agent. So, on adding sulphuric acid to glucose water is removed from it in the form of steam.