Advertisements
Advertisements
Question
On heating blue coloured powder of copper (II) nitrate, in a boiling tube, copper oxide (black), oxygen gas and a brown gas X is formed
- Write a balanced chemical equation of the reaction.
- Identify the brown gas X evolved.
- Identify the type of reaction.
- What could be the pH range of aqueous solution of the gas X?
Advertisements
Solution
- `underset("Copper (II) nitrate")(2"Cu"("NO"_3)_2)("s") overset "(Heat)"(->) underset "(Black)" (2"CuO"("s")) + underset(X)(4"NO"_2("g")) + "O"_2("g")`
- Brown gas (X) is nitrogen dioxide.
- It is an example of decomposition reaction.
- Nitrogen dioxide is an acidic oxide. Therefore, it dissolves in water to form an acidic solution. The pH of the solution is expected to be less than 7.
APPEARS IN
RELATED QUESTIONS
Write the balanced chemical equation for the following and identify the type of reaction.
\[\ce{Zinc carbonate(s) -> Zinc oxide(s) + Carbon dioxide(g)}\]
What does one mean by exothermic reaction? Give example.
Why are decomposition reactions called the opposite of combination reactions? Write equations for these reactions.
What type of reaction is represented by the following equation?
\[\ce{2FeSO4 -> Fe2O3 + SO2 + SO3}\]
What type of reaction is represented by the following equation?
\[\ce{NH4Cl -> NH3 + HCl}\]
What type of chemical reaction takes place when electricity is passed through water?
How will you obtain Nitrogen dioxide from lead nitrate.
Also give balanced equations for the reactions
What does one mean by endothermic reaction? Give example.
Identify the type of following reaction :
Give a balanced equation for –
A thermal decomposition reaction involving heat on limestone [calcium carbonate]
Give a balanced equation for –
A double decomposition neutralization reaction involving an acid and a base
Chemical volcano is an example of ______ type of reaction.
The following reaction is used for the preparation of oxygen gas in the laboratory:
\[\ce{2KClO3_{(s)} ->[Heat] 2KCl + 3O2_{(g)}}\]
Which of the following statement about the reaction is correct?
Electrolysis of water is a decomposition reaction. The mole ratio of hydrogen and oxygen gases liberated during electrolysis of water is:
When SO2 gas is passed through a saturated solution of H2S, which of the following reaction occurs?
Balance the following chemical equation and identify the type of chemical reaction.
`"HgO"("s") overset("(heat)")(->) "Hg"("l") + "O"_2("g")`
What is observed when silver chloride is exposed to sunlight? Give the type of reaction involved.
Write the molecular formula of calcium carbonate.
Write one equation for the decomposition reaction where energy is supplied in the form of light.
