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प्रश्न
MnO2, PbO2 and red lead react with conc. HCl acid to liberate Cl2.
What is the common property being shown by these metal oxides?
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उत्तर
MnO2, red lead(Pb3O4), and PbO2 are all powerful oxidizing agents that exhibit a reducing property when reacting with conc. HCl is used to liberate Cl2 (gas), and oxidizing chemicals oxidize the conc. HCl converts to chlorine.
संबंधित प्रश्न
Potassium sulfite on reacting with hydrochloric acid releases _______ gas. (Cl2, SO2, H2S)
Name the gas that is produced in the given cases :
An action of dilute hydrochloride acid on sodium sulphide.
How will the action of dilute hydrochloric acid enable you to distinguish between sodium carbonate and sodium sulphite?
What must be added to sodium chloride to prepare hydrogen chloride?
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.
Write a fully balanced of the following case :
Magnesium metal is treated with dilute hydrochloric acid.
Give a chemical test to distinguish between the following pair of compounds:
Sodium chloride solution and sodium nitrate solution.
Give a chemical test to distinguish between the following pair of compounds:
Hydrogen chloride gas and hydrogen sulphide gas
Write observation:
Lead nitrate solution is mixed with dilute hydrochloric acid and heated.
Study the flow chart and give balanced equations with conditions for the conversions A, B, C, D, and E.
