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प्रश्न
Hydrogen chloride gas is prepared in the laboratory by the action of concentrated sulphuric acid on sodium chloride.
Give a balanced chemical equation for the above reaction.
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उत्तर
\[\ce{2NaCl + H2SO4 ->[< 200°C][]2HCl + Na2SO4}\]
Sodium's greater reactivity than hydrogen replaces 'H' from acid to produce matching salts and strong volatile acid (HCl).
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संबंधित प्रश्न
Identify the acid in the following case:
The acid on mixing with lead nitrate solution produces a white precipitate, which is insoluble even on heating.
In the contact process for the manufacture of sulphuric acid give the equations for the conversion of sulphur trioxide to sulphuric acid.
Distinguish between the given pairs of compounds using the test given within brackets:
Dilute sulphuric acid and dilute hydrochloric acid (using barium chloride solution)
Give reason for the following:
When concentrated sulphuric acid is exposed to air, its volume increases and it becomes slightly dilute.
How are the following conversion brought about? Give equation and condition:
Dilute sulphuric acid to hydrogen.
In the given equation identify the role played by concentrated sulphuric acid S + 2H2SO4→ 3SO2 + 2H2O
Give a balanced chemical equation for the action of sulphuric acid on the following:
Potassium hydrogen carbonate
Give a balanced chemical equation for the action of sulphuric acid on the following:
Sulphur
Name the gas released when sodium carbonate is added to a solution of sulphur dioxide.
Complete the table given below:
| Name of the process | Reactants | Acid product formed |
| (a) ______ | Nitrogen dioxide + water + oxygen | (b) ______ |
| (c) ______ | Oleum + water | Sulphuric acid |
