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प्रश्न
State your observations when Concentrated Sulphuric acid is added to Sugar Crystals
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उत्तर
When sugar reacts with conc. H2SO4, it gives a black spongy mass of carbon which is called sugar charcoal.
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संबंधित प्रश्न
In the contact process for the manufacture of sulphuric acid give the equations for the conversion of sulphur trioxide to sulphuric acid.
Give one equation to show the following properties of sulphuric acid:
Acidic nature
Name the following:
The precipitate obtained by treating carbon with hot concentrated sulphuric acid.
Give reason for the following:
When solution of sulphur dioxide is exposed to air, it gets converted to sulphuric acid.
Give reason for the following:
When concentrated sulphuric acid is added to blue crystalline copper sulphate, it turns powdery white.
Choose the current answer from the options given below :
When conc. H2SO4 comes in contact with sugar, it becomes black due to
A, B, C and D summarize the properties of sulphuric acid depending on whether it is dilute or concentrated. Choose the property (A, B, C or D), depending on which is relevant to each of the preparations (i) to (ii).
A. Dilute acid (typical acid properties)
B. Non-volatile acid
C. Oxidizing agent
D. Dehydrating agent
(i) Preparation of hydrogen chloride.
(ii) Preparation of ethane from ethanol
(iii) Preparation of copper sulphate from copper oxide.
Name the gas evolved in following case:
The gas produced by the action of concentrated sulphuric acid on sodium chloride.
Give a balanced chemical equation for the action of sulphuric acid on the following:
Potassium hydrogen carbonate
The salt is formed when concentrated sulphuric acid reacts with KNO3 above 200°C.
