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.
Advertisements
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
What is the colour of ferrous sulphate crystals? How does this colour change after heating?
A metal salt MX when exposed to light splits up to form metal M and a gas X2. Metal M is used in making ornaments whereas gas X2 is used in making bleaching powder. The salt MX is itself used in black and white photography.
- What do you think metal M is?
- What could be gas X2?
- Name the metal salt MX.
- Name any two salt solutions which on mixing together can produce a precipitate of salt MX.
- What type of chemical reaction takes place when salt MX is exposed to light? Write the equation of the reaction.
How can the rate of the chemical reaction, namely, decomposition of hydrogen peroxide be increased?
Complete the statement by filling in the blank with the correct word:
Decomposition of silver salts in the presence of sunlight is an example of _________.
Give a balanced equation for the following type of reaction:
A thermal decomposition reaction in which a compound decomposes to give two new compounds.
Explain the reaction given in the figure.
Marble statues are corroded or stained rain water. Identify the main reason.
What is observed when silver chloride is exposed to sunlight? Give the type of reaction involved.
Write the molecular formula of calcium carbonate.
