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प्रश्न
Give a chemical test to distinguish between the given pairs of chemicals:
Sodium chloride solution and Sodium nitrate solution
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उत्तर
NaCl and NaNO3 solution can be distinguished simply by the addition of AgNO3 solution into it NaCl solution will give while precipitating of AgCl whereas NaNO3 will not.
`NaCl + AgNO_3 -> AgCl↓ + NaNO_3`
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संबंधित प्रश्न
Write an equation for the reaction of hydrochloric acid on zinc carbonate.
Write an equation for the reaction of aqueous hydrochloric acid on lead nitrate solution.
Explain why dilute hydrochloric acid cannot be concentrated by boiling beyond 22.2%.
State the composition of aqua regia. State which component is the oxidizing agent in aqua regia.
What would happen if
Calcium oxide is used to dry hydrogen chloride.
What is the function of HCI in preparation 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.
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 |
Write observation:
A small piece of zinc is added to dilute hydrochloric acid.
State which of the two - a solution of HCl in water or in toluene is an electrolyte. Explain.
