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Question
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.
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Solution
| S. No. | Substances added | Gas evolved | Odour |
| 1. | Calcium carbonate | CO2 | Odourless |
| 2. | Magnesium ribbon | H2 | Odourless |
| 3. | Manganese (IV) oxide with heating | Cl2 | Strong Pungent odour |
| 4. | Sodium sulphide | H2S | Rotten egg |
RELATED QUESTIONS
State your observations when Dilute Hydrochloric acid is added to Copper carbonate
Dry hydrogen chloride gas can be collected by ________ displacement of air. (downward / upward)
Give a chemical test to distinguish between the given pairs of chemicals:
Sodium chloride solution and Sodium nitrate solution
Write an equation for the reaction of hydrochloric acid on copper oxide.
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.
Name the following:
Gas obtained by treating ferrous sulphide with hydrochloric acid.
Match the following:
| Column A | Column B |
| 1. A substance that turns moist starch iodide paper blue. | A. Ammonium sulphate |
| 2. A compound which release a reddish brown gas on reaction with concentrated sulphuric acid and copper turnings. | B. Lead carbonate |
| 3. A solution of this compound gives dirty green precipitate with sodium hydroxide. | C. Chlorine |
| 4. A compound which on heating with sodium hydroxide produces a gas which forms dense white fumes with hydrogen chloride. | D. Copper nitrate |
| 5. A white solid which gives a yellow residue on heating | E. Ferrous sulphate |
Give a chemical test to distinguish between the following pair of compounds:
Hydrogen chloride gas and hydrogen sulphide gas
State which of the two - a solution of HCl in water or in toluene is an electrolyte. Explain.
