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प्रश्न
Give reason for the following:
Concentrated sulphuric acid must be stored in airtight bottles.
उत्तर
Concentrated sulphuric acid must be stored in air tight bottles as it gains water from air and gets slightly diluted thus resulting in increase in volume.
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संबंधित प्रश्न
Write a balanced chemical equation for each of the following reactions :
Action of dilute sulphuric acid on sodium hydroxide.
Give reason for the following:
In the contact process, sulphur dioxide is dissolved in 98% sulphuric acid and not in water.
How are the following conversion brought about? Give equation and condition:
Aqueous barium chloride to barium sulphate.
Name two other acids other than sulphuric acid, which can be prepared by using sulphuric acid.
Making use only of substances chosen from those given below:
Dilute sulphuric acid
Sodium carbonate
Zinc
Sodium sulphite
Lead
Salcium carbonate
Give the equation for the reaction by which you could obtain:
(i) Hydrogen
(ii) Sulphur dioxide
(iii) Carbon dioxide
(iv) Zinc Carbonate (two steps required).
Sulphuric acid is manufactured by the contact process.
Why \[\ce{H2SO4}\] is not obtained by directly reacting \[\ce{SO3}\] with water.
Write a balanced chemical equation when hot and concentrated sulphuric acid reacts with the following:
Sugar
The following are the typical properties of dilute acid. Complete them by inserting suitable words:
Sulphite/hydrogen sulphite + Acid → ______ + ______ + ______
The following are the typical properties of dilute acid. Complete them by inserting suitable words:
Sulphide + Acid → ______ + ______
Arrange the following as per the instruction given in the bracket:
Sulphuric acid, Phosphoric acid, Acetic acid (increasing order of number of replaceable H atoms per molecule).
