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प्रश्न
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.
उत्तर
Sodium chloride solution and sodium nitrate solution can be distinguished by using conc. sulphuric acid. To the salt solution, add freshly prepared ferrous sulphate solution and pour a few drops of conc. H2SO4 along the sides of the tube. If it's sodium nitrate solution then a brown ring would appear at the junction of the two liquid layers. But if its sodium chloride solution, it would not undergo any visible reaction.
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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.
The following are pertaining to the laboratory preparation of hydrogen chloride gas.
Write the equation for its preparation mentioning the condition required.
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.
State your observation in given case When dilute hydrochloric acid is added to sodium carbonate crystals
Draw a labelled diagram for the laboratory preparation of hydrogen chloride gas and answer the following.
- Name the acid used. Why is this particular acid preferred to other acids?
- Give the balanced equation for the reaction.
- Name the drying agent used in drying hydrogen chloride gas.
- Phosphorous pentoxide and calcium oxide are good drying agents, but they cannot be used to dry hydrogen chloride gas. Why?
- Why is the direct absorption of \[\ce{HCl}\] gas in water not feasible?
- What arrangement is done to dissolve \[\ce{HCl}\] gas in the water?
Explain why thick white fumes are formed when a glass rod dipped in \[\ce{NH4OH}\] is brought near the mouth of a bottle full of \[\ce{HCl}\] gas.
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.
Draw a labelled diagram and explain the laboratory preparation of hydrogen chioride gas.
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.
Complete and balance the equations:
KMnO4 + HCI → _______+ _______ + _______ + ______ + 8H2O
Write the equation for the reaction which takes place in question(a).
Write balanced equation for the reaction between dilute hydrochloric acid and sodium sulphite.
Write the equation for:
The reaction between hydrogen chloride and ammonia.
What property of hydrogen chloride is demonstrated when it is collected by downward delivery (upward displacement) ?
The following question is pertaining to the laboratory pertaining hydrogen chloride gas.
Name the drying agent used and justify your choice.
Give one test to distinguish between the following pair of chemicals.
Iron (III) Chloride solution and copper chloride solution.
Answer the following question related to the laboratory preparation of the hydrogen chloride gas:
Write the chemical equation.
