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प्रश्न
Give one equation to show the following property of sulphuric acid:
Dehydrating property
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उत्तर
H2SO4 has a great affinity for water, and therefore, it acts as a dehydrating agent.
\[\ce{HCOOH ->[conc.H2SO4] CO + H2O}\]
\[\ce{C2H5OH ->[conc.H2SO4] C2H4 + H2O}\]
संबंधित प्रश्न
Name the products formed when hot and concentrated sulphuric acid reacts with Sugar.
Why is H2SO4 is not used as a drying agent for H2S?
Name the following:
Products obtained by treating zinc with dilute sulphuric acid.
How are the following conversion brought about? Give equation and condition:
Sucrose to sugar charcoal.
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.
Lead sulphate from lead nitrate.
Write the equation of the following reaction :
Concentrated sulphuric acid is poured over sugar
Identify the gas evolved and give the chemical test in the following case:
Dilute hydrochloric acid reacts with iron (II) sulphide.
An acid obtained from concentrated nitric acid on reaction with Sulphur ______.
Complete the table given below:
| Name of the process | Reactants | Acid product formed |
| (a) ______ | Nitrogen dioxide + water + oxygen | (b) ______ |
| (c) ______ | Oleum + water | Sulphuric acid |
