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प्रश्न
Write an equation for the reaction of hydrochloric acid on copper oxide.
उत्तर
\[\ce{CuO + 2HCl -> CuCl2 + H2O}\]
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संबंधित प्रश्न
State one relevant observation for given reactions:
Action of dilute Hydrochloric acid on iron (II) sulfide.
Select from the list the gas that matches the description given in case
[ammonia, ethane, hydrogen chloride, hydrogen sulfide, ethyne]
This gas has a characteristic rotten egg smell.
How will the action of dilute hydrochloric acid enable you to distinguish between sodium carbonate and sodium sulphite?
State the composition of aqua regia. State which component is the oxidizing agent in aqua regia.
State the use of aqua-regia.
Fill in the blank:
On addition of silver nitrate to hydrochloric acid ___________ precipitate is formed which is soluble in ____________
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.
Identify the salts P and Q from the observation given below:
When dilute HCl is added to a salt Q, a brisk effervescence is produced and the gas turns lime water milky. When NH4OH soltion is added to the above mixture (after adding dilute HCl), it produces a white precipitate which is soluble in excess NH4OH solution.
