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प्रश्न
The following question is pertaining to the laboratory pertaining hydrogen chloride gas.
Name the drying agent used and justify your choice.
The following question is pertaining to the laboratory preparation of hydrogen chloride gas.
Name the drying agent used in the above preparation and give a reason for the choice.
उत्तर
The drying agent used in the laboratory preparation of hydrochloric acid is conc. sulphuric acid. The other drying agents, such as phosphorus pentoxide \[\ce{(P2O5)}\] and quick lime \[\ce{(CaO)}\]cannot be used because they react with hydrogen chloride.
\[\ce{2P2O5 + 3HCl -> POCl3 + 3HPO3}\]
\[\ce{CaO + 2HCl -> POCl3 + 3HPO3}\]
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संबंधित प्रश्न
Certain blank spaces are left in the following table and these are labelled as A, B, C, D
and E. Identify each of them
| Lab preparation of | Reactants used | Products formed | Drying Agent | Method of collection |
|
| 1 | HCl gas | NaCl + H2SO4 |  |
conc. H2SO4 |  |
| 2 | NH3 gas |
|
Mg(OH)2 NH3 |
 |
 |
The following are pertaining to the laboratory preparation of hydrogen chloride gas.
State a safety precaution you would take during the preparation of hydrochloric acid.
Write the balanced chemical equation for the laboratory preparation of hydrogen chloride gas.
For the preparation of hydrochloric acid in the laboratory:
Why is the direct absorption of hydrogen chloride gas in water not feasible?
Give the balanced equation for the laboratory preparation of hydrogen chloride gas reaction.
Name the drying agents used in drying hydrogen chloride gas.
Name the drying agents phosphorus pentoxide and calcium oxide are good drying agent but they cannot be used to dry hydrogen chloride gas. Why?
Explain why when the stopper of a bottle full of hydrogen chloride gas is opened, there are fumes in the air.
Explain why dry hydrogen chloride gas does not affect a dry strip of blue litmus paper but it turns red in the presence of a drop of water.
The drying agent used to dry \[\ce{HCl}\] gas is ______.
Draw a labelled diagram and explain the laboratory preparation of hydrogen chioride gas.
How will you prove that the gas prepared is HCI?
What are the important precautions?
Explain, why (or give reasons for)
Hydrogen chloride is not collected over water.
Choose the correct answer from the options given below:
Dilute hydrochloric acid solution cannot be concentrated by boiling beyond
One chemical test that would enable you to distinguish between the following pair of chemicals. Describe what happens with each chemical or state 'no visible reaction'.
Sodium sulphate solution and sodium chloride solution.
Complete and balance the following reaction, state whether dilute or conc. acid is used.
\[\ce{NH4OH + HCl ->}\]
