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प्रश्न
The following are pertaining to the laboratory preparation of hydrogen chloride gas.
Write the equation for its preparation mentioning the condition required.
उत्तर
The equation for the laboratory preparation of hydrogen chloride gas:
Although it is a reversible reaction, it goes to completion as hydrogen chloride continuously escapes as a gas.
The reaction can occur up to the stage of the formation of sodium sulphate on heating above 200°C.
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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 |
 |
 |
Write a balanced chemical equation for the action of hydrochloric acid on sodium bicarbonate.
Identify the gas evolved and give the chemical test in the following cases
Dilute hydrochloric acid reacts with sodium sulphite.
State your observation in given case When dilute hydrochloric acid is added to sodium carbonate crystals
Name the acid used for the preparation of hydrogen chloride gas in the laboratory. Why is this particular acid preferred to other acids?
Explain why a solution of hydrogen chloride in water turns blue litmus red and conducts electricity, while a solution of the same gas in toluene:
- has no effect on litmus, and
- does not conduct electricity.
Name the gas produced when chlorine water is exposed to sunlight.
Explain, why (or give reasons for)
Hydrogen chloride is not collected over water.
Describe an experiment to prove the following:
HCI gas contains the element chlorine.
What is aqua-regia?
Mention the reaction condition and give balanced equation to obtain: Cl2 gas from HCI gas.
Explain, why the following statement is not correct:
Lead chloride can be prepared by adding dilute HCI to lead sulphate solution.
Write the equation for :
The preparation of hydrogen chloride from sodium chloride and sulphuric acid. State whether the sulphuric acid should be concentrated or dilute.
State the observation for action of dilute hydrochloiric acid or iron (II) sulphate.
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 chloride solution and sodium nitrate solution.
Answer the following question related to the laboratory preparation of the hydrogen chloride gas:
Write the chemical equation.
In the laboratory preparation, HCl gas is dried by passing through ______.
State a relevant reason for the following:
Hydrogen chloride gas cannot be dried over quick lime.
Complete and balance the following reaction, state whether dilute or conc. acid is used.
\[\ce{NH4OH + HCl ->}\]
