Advertisements
Advertisements
प्रश्न
Give balanced equation for the following conversion affected by heat alone on the substance:
Hydrated copper sulphate to sulphur dioxide
Advertisements
उत्तर
Action of heat on:
\[\ce{\underset{\text{[Hydrated copper sulphate blue]}}{CuSO4.5H2O} ->[\triangle]\underset{\text{[Anhydrous white]}}{CuSO4} + 5H2O}\]
On Strong heating:
\[\ce{\underset{\text{[white]}}{2CuSO4} ->[\triangle]\underset{\text{[black]}}{2CuO} + \underset{\text{Sulphur dioxide}}{2SO2} + O2}\]
APPEARS IN
संबंधित प्रश्न
State whether the following statement is true or false. In case a statement is false, write the corrected statement.
Iron pipes coated with zinc do not get rusted easily.
FILL IN THE BLANK
........... electrolytes dissociate completely in aqueous state and allow large amount of electricity to flow through it.
What are biocatalysts ?
Define a photochemical reaction.
When hydrogen burns in oxygen, water is formed; when electricity is passed through water, hydrogen and oxygen are given out. Name the type of chemical change involved in the two cases.
Name the gases which turn moist red litmus blue.
Give a balanced equation for a reaction involving the evolution of gas on the addition of dilute acid to calcium carbonate.
A student took a solution of copper sulphate in a beaker and put a clean iron nail into it and left it for about an hour.
Are these changes chemical in nature?
Match the following:
| Column I | Column II | ||
| 1. | Burning of coal | a. | Rusting |
| 2. | Painting of a surface | b. | Evaporation |
| 3. | Dipping iron in the water | c. | Chemical change |
| 4. | Salt from seawater | d. | Prevention of rusting |
Write the chemical reaction of baking soda with lemon.
