Advertisements
Advertisements
Question
Classify the following reaction into –
- Direct combination
- Decomposition
- Displacement
- Double decomposition
The reaction is – Zinc hydroxide on heating gives zinc oxide and water.
Solution
Zinc hydroxide a single compound decomposes into two simpler components zinc oxide and water, hence it is a decomposition reaction.
APPEARS IN
RELATED QUESTIONS
Rewrite the following statements by selecting the correct options:
\[\ce{CaCO3 ->[\Delta] CaO + CO2 ^}\] is a __________ reaction.
The white solid compound A decomposes quite rapidly on heating in the presence of a black substance X to form a solid compound B and a gas C. When an aqueous solution of compound B is reacted with silver nitrate solution, then a white precipitate of silver chloride is obtained along with potassium nitrate solution. Gas C does not burn itself but helps burn other things.
(a) What is compound A?
(b) What is compound B?
(c) What is gas C?
(d) What do you think is the black substance X? What is its function?
(e) What is the general name of substances like X?
What type of chemical reaction take place when lime-stone is heated?
What type of chemical reaction is represented by the following equation?
X → Y + Z
What is a decomposition reaction?
Classify the following reaction as combination, decomposition, displacement, precipitation and neutralization. Also balance the equation.
\[\ce{Zn_{(s)} + H2SO4 -> ZnSO4_{(s)} + H2_{(g)}}\]
What do you mean by redox reaction ? Explain with the help of an example.
How can the rate of the chemical reaction, namely, decomposition of hydrogen peroxide be increased?
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?
What is observed when silver chloride is exposed to sunlight? Give the type of reaction involved.
