12 Questions
Why is concentrated sulphuric acid kept in airtight containers?
To prevent escape of harmful fumes
Which product is formed when hot and concentrated sulphuric acid reacts with copper?
Copper sulfate
What happens when HBr is treated with concentrated H${2}$SO${4}$?
Red-brown vapors are produced
Why does a piece of wood get blackened when treated with concentrated sulphuric acid?
It reacts with the carbon in wood
What is the catalyst used in the process of manufacturing sulphuric acid?
Nickel
Why is concentrated sulphuric acid preferred over nitric acid and hydrochloric acid for laboratory preparations?
It is less volatile than the other acids
Which catalyst helps in the conversion of sulphur dioxide to sulphur trioxide in step B?
Platinum
What type of substance will liberate sulphur dioxide from sodium sulphite in step D?
Acid
What is the large-scale manufacturing process of sulphuric acid?
Contact Process
Which property of sulphuric acid accounts for its use as a dehydrating agent?
Hygroscopic nature
What property of concentrated sulphuric acid makes it an oxidizing agent?
Acidic nature
Which compound has the highest boiling point among HCI, HNO3, and H₂SO₄?
$H_2SO_4$
Test your knowledge on the products formed when hot and concentrated sulphuric acid reacts with carbon, sulphur, and copper. Understand the reasons why concentrated sulphuric acid is kept in airtight containers, used in the preparation of HCl and HNO3, and why it forms two types of salts with NaOH. Explore why a piece of wood gets blackened when treated with concentrated sulphuric acid.
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