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प्रश्न
Give balanced equation for the following conversion affected by heat alone on the substance:
Copper nitrate to nitrogen dioxide
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उत्तर
Action of heat on:
\[\ce{\underset{\text{[blue]}}{2Cu[NO3]2} ->[\triangle]\underset{\text{[black]}}{2CuO} +\underset{\text{Nitrogen dioxide}}{4NO2} + O2}\]
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संबंधित प्रश्न
Fill in the blanK
A .............is a substance which changes the rate of a chemical reaction without undergoing a chemical change.
Fill in the blank
A new substance is always formed in a _______ change.
Give balanced equation for the following conversion affected by heat alone on the substance:
Zinc carbonate to zinc oxide
Complete the table given below.
| Heat on iodine crystals | Colour of vapours evolved |
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Ammonium dichromate.
Higher order Thinking question
Peeled and unpeeled banana does not look the same. Does that mean peeling banana is a chemical change?
Assertion: The formation of iron oxide from iron is a chemical change.
Reason: For the rust to form from iron, it must be exposed to air and water.
Burning of paper is the best example of ______ change.
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
Do you think formation of rust from iron is a chemical change?
Rusting of iron is ______.
