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प्रश्न
Give a balanced equation when dilute hydrochloric acid is added to : Calcium carbonate
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उत्तर
CaCO3 + 2HCI → CaCl2 + H2O +CO2
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संबंधित प्रश्न
Name a black metallic oxide which reacts with hydrochloric acid to give a coloured solution.
Distinguish between the following pairs of compounds using the reagent given in the bracket.
Mangenese dioxide and copper (II) oxide. (using concentrated HCl)
Name the gas evolved when dilute hydrochloric acid is added to: Sodium sulphite
How will you identify?
Chloride ion
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 | _________ | _________ |
How will you prove that hydrochloric acid contains
- hydrogen
- chlorine?
Write equations for the reactions.
- Give only one suitable chemical test to identify the following gases.
- Ammonia
- Sulphur dioxide
- Hydrogen chloride
- Chlorine
- Carbon dioxide
- Oxygen
- Hydrogen
- Select a basic gas mentioned in Q. (a). How is the basic nature suspected?
- Select acidic gases from the gases mentioned in Q. (a). How is the acidic nature suspected?
- The two gases A and B are bleaching agents. A is greenish-yellow and bleaches due to its oxidizing property while B is a colourless gas that bleaches due to reduction. Identify A and B?
- Which gas turn blue cobalt chloride paper light pink? Give one similarity in the test between
- Cl2 and HCl
- SO2 and CO2.
Complete and balance the following reaction, state whether dilutes or conc. acid is used.
\[\ce{NH4OH + HCl -> }\]
Complete and balance the following reaction, state whether dilute or cone. acid is used.
\[\ce{NH4OH + HCl->}\]
Study the flow chart and give balanced equations with conditions for the conversions A, B, C, D and E.
