Question

Sunidhi was asked by her teacher to prepare a dilute sulphuric acid from concentrated sulphuric acid. What should she do ?
(1) Add water to the acid
(2) Add acid to the water
(3) Add a base to the concentrated acid
(4) Add an alkali to the concentrated acid

Answer 1

She should add acid to water. This is one of the fundamental rules of solution of concentrated acid
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Answer 2

Answer:

Option (2) Add acid to the water.

Explanation:

To dilute any concentrated acid, rule is to add the acid slowly into water.

Vice-versa is dangerous. When a drop of water is added to highly concentrated acid, it produces more heat, then the acid bursts out of the container.

Even while mixing a concentrated and dilute acid, highly concentrated one has to be added to the less concentrated one.

Adding alkali or base to the concentrated acid forms solution / salt.