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प्रश्न
Draw a labelled diagram and explain the laboratory preparation of hydrogen chioride gas.
उत्तर
Hydrogen chloride gas is prepared by the reaction of sodium chloride and sulphuric acid at the temperature below 200°C. Sodium chloride is preferred for laboratory preparation of HCI gas since it is cheapest and most easily available chloride. Lower temperature is preffered because at higher temperature sodium sulphate forms a hard crust and sticks to the bottom of the flask and is difficult to remove.
\[\ce{\underset{\text{Sodium chloride}}{NaCl} + \underset{\text{Sulphuric acid(conc.)}}{H2SO4} ->[<200°C] NaHSO4 + \underset{\text{Hydrogen chloride gas}}{HCl}}\]
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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 |
 |
 |
Identify the gas evolved and give the chemical test in the following cases
Dilute hydrochloric acid reacts with sodium sulphite.
Identify the gas evolved and give the chemical test in the following cases
Dilute hydrochloric acid reacts with iron (II) sulphide.
The following are pertaining to the laboratory preparation of hydrogen chloride gas.
Write the equation for its preparation mentioning the condition required.
Give the balanced equation for the laboratory preparation of hydrogen chloride gas reaction.
The given set up in the figure is for the preparation of an acid.
- Name the acid prepared by this method.
- Name the reactants used.
- Why an empty flask is used?
- What is the drying agent used? Why is this drying agent chosen?
- What is the role of the inverted funnel in the arrangement?
Name the gas produced when chlorine water is exposed to sunlight.
Explain, why (or give reasons for)
HCI gas does not conduct electricity, but hydrochloric acid conducts electricity.
Describe an experiment to prove the following:
HCI gas contains the element chlorine.
Mention the reaction condition and give balanced equation to obtain: Cl2 gas from HCI gas.
Mention the reaction condition and give balanced equation to obtain: Cl2 gas from HCI acid.
Choose the correct answer from the options given below:
Bleaching powder reacts with few drops of concentrated HCl to give
Complete and balance the equations:
KMnO4 + HCI → _______+ _______ + _______ + ______ + 8H2O
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.
What property of hydrogen chloride is demonstrated when it is collected by downward delivery (upward displacement) ?
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.
Answer the following question related to the laboratory preparation of the hydrogen chloride gas:
Write the chemical equation.
Identify the gas evolved in the following reaction:
\[\ce{MnO2}\] reacts with concentrated \[\ce{HCl}\].
