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प्रश्न
State your observations when Concentrated Sulphuric acid is added to Sugar Crystals
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
State one relevant observation for given reactions:
Addition of ethyl alcohol to acetic acid in the presence of concentrated Sulphuric acid
Which property of sulphuric acid is shown by the reaction of the concentrated sulphuric acid with Ethanol?
Name the products formed when hot and concentrated sulphuric acid reacts with NaOH.
Describe the reaction that show
Concentrated sulphuric acid behaves as oxidizing agent.
Choose the current answer from the options given below :
When conc. H2SO4 comes in contact with sugar, it becomes black due to
Write balanced equation for the reaction of dilute sulphuric acid with the following:
Lead nitrate solution
What do you see when concentrated sulphuric acid is added to copper sulphate-5-water ( You are not required to say what is happing, nor is it necessary to name the products.)
Copy and complete the following table.
Column 3 has the names of gases to be prepared using the substance you enter in column 1, along with dilute or concentrated sulphuric acid, as indicated in column 2.
| Column 1 | Column 2 | Column 3 |
| Substance reacted with acid | Dilute or concentrated sulphuric acid | Gas |
| Hydrogen | ||
| Carbon dioxide | ||
| Only chlorine |
Write the equation for the laboratory preparation of :
(i) Sodium sulphate using dilute sulphuric acid.
(ii) Lead sulphate using dilute sulphuric acid.
Write the equation for the laboratory preparation of the following salts, using sulphuric acid.
Iron (II) sulphate from iron.
State two observations when
A few crystals of KNO3 are heated in a hard glass tube
