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प्रश्न
Convert an insoluble base
उत्तर
Insoluble base to soluble salt:
\[\ce{\underset{\text{[insoluble base]}}{Cu[II]oxide} \underset{\text{base}}{Cu.O} + \underset{\text{acid}}{H2SO4}->\underset{\text{Salt [Soluble salt]}}{CuSO4} + \underset{\text{water}}{H2O}}\]
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संबंधित प्रश्न
Explain, giving one example of the following chemical changes:
Double decomposition
(a) What is synthesis?
(b) What kind of chemical reaction is synthesis? Support your answer by an example.
State the type of reactions for the following represent and balance the ones that are not balanced.
2H2O2→ 2H2O + O2
State the type of reactions for the following represent and balance the ones that are not balanced.
CuO+H2→ Cu+ H2O
Decomposition reactions can occur by electricity
Give balanced reactions.
Decomposition reactions can occur by sunlight.
Give two balanced reactions.
Select the correct salt from list II which on thermal decomposition exhibits the change in colour from list I.
| List I | List II |
| 1. Light green to black | A: Copper carbonate |
| 2. White to yellow [heated state] | B: Hydrated Copper sulphate |
| 3. Blue to black | C: Copper nitrate |
| 4. Orange to green | D: Ammonium dichromate |
| 5. Blue to white | E: Zinc nitrate |
State which of the substance given below evolve oxygen gas on thermal decomposition.
Zinc carbonate
State which of the substance given below evolve oxygen gas on thermal decomposition.
Lead nitrate
State which of the substance given below evolve oxygen gas on thermal decomposition.
Zinc nitrate
