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प्रश्न
Give reason for the following:
When diluting concentrated sulphuric acid, the acid should be added to water and not water to the acid.
उत्तर
When water is added to concentrated sulphuric acid the heat evolved may be sufficient to raise the temperature of water to its boiling point. This may throw acid violently out of the container. Thus concentrated sulphuric acid is diluted by adding a small amount of sulphuric acid to large amount of water.
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संबंधित प्रश्न
Comment, sulphuric acid is referred to as King of chemicals.
What is the name given to the salts of sulphurous acid?
Complete the following equations :
S + conc.HNO3 →
What would you observe in the following case?
Sulphur trioxide is dissolved in water on a large scale.
How are the following conversions brought about? Give equation and condition:
Sulphur trioxide to sulphur acid.
HCl, HNO3 and H2SO4 are formulae of three compounds. Which of these compounds has the highest boiling point and which has the lowest?
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.
Name the chemical used to dissolve \[\ce{SO3}\] and also name the product formed. Give all the main reactions to this process.
The following are the typical properties of dilute acid. Complete them by inserting suitable words:
Sulphide + Acid → ______ + ______
State the observation for the following, when:
Concentrated sulphuric acid is added to carbon.
