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प्रश्न
State the composition of aqua regia. State which component is the oxidizing agent in aqua regia.
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उत्तर
A mixture having three parts conc. Hydrochloric acid and one part conc. Nitric acid is called aqua-regia.
Nitric acid acts as an oxidizing agent.
संबंधित प्रश्न
State your observation when dilute hydrochloric acid is added to a lead nitrate solution and the mixture is heated.
Write an equation for the reaction of hydrochloric acid on copper oxide.
Name an element which reacts with hydrogen to form a compound which is strongly acidic in water.
Name the following:
A chemical in which gold can be dissolved.
What would happen if
Calcium oxide is used to dry hydrogen chloride.
What is the function of HCI in preparation of aqua-regia?
Write a fully balanced of the following case :
Magnesium metal is treated with dilute 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 |
Write the balanced equation for the reaction of dilute hydrochloric acid with the following:
Sodium hydrogen carbonate
Study the flow chart and give balanced equations with conditions for the conversions A, B, C, D, and E.
