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प्रश्न
Give three distinct test [apart from using an indicator] you would carry out with solution of HCl to illustrate the typical properties of an acid.
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उत्तर
1. HCl gas gives thick white fumes of ammonium chloride when a glass rod dipped in ammonia solution is held near the vapours of the acid.
\[\ce{NH3 + HCl -> NH4Cl}\]
2. With silver nitrate, HCl gives a white precipitate of silver chloride. The precipitate is insoluble in nitric acid but soluble in ammonium hydroxide.
\[\ce{AgNO3 + HCl -> AgCl + HNO3}\]
3. A greenish-yellow gas is liberated when concentrated hydrochloric acid is heated with an oxidizing agent like manganese dioxide.
\[\ce{MnO2 + 4HCl -> MnCl2 +2H2O + Cl2}\]
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संबंधित प्रश्न
Write a balanced equation for the action of dilute hydrochloric acid on sodium sulphide.
How will the action of dilute hydrochloric acid enable you to distinguish between sodium carbonate and sodium sulphite?
State the composition of aqua regia. State which component is the oxidizing agent in aqua regia.
State which component is the oxidizing agent in aqua regia.
State the use of aqua-regia.
A solution of hydrogen chloride in water is prepared. The following substances are added to separate portions of the solution:
| S. No. | Substances added | Gas evolved | Odour |
| 1. | Calcium carbonate | _________ | _________ |
| 2. | Magnesium ribbon | _________ | _________ |
| 3. | Manganese (IV) oxide with heating | _________ | _________ |
| 4. | Sodium sulphide | _________ | _________ |
Complete the table by writing the gas evolved in each case and its odour.
Give a chemical test to distinguish between the following pair of compounds:
Hydrogen chloride gas and hydrogen sulphide gas
Write the balanced equation for the reaction of dilute hydrochloric acid with the following:
Sodium hydrogen carbonate
Write observation:
A small piece of zinc is added to dilute hydrochloric acid.
Write an equation for the reaction of hydrochloric acid on manganese (IV) oxide.
