Decomposition Reaction Explained
The question describes the breakdown of calcium carbonate (CaCO₃$) into calcium oxide (CaO$) and carbon dioxide (CO₂$) when subjected to heat.
This process is a decomposition reaction because a single compound breaks down into two or more simpler substances.
The specific type of decomposition is determined by the energy source required for the reaction.
- Heating is the energy source mentioned in the question.
- Decomposition reactions driven by heat are called thermal decomposition reactions.
The chemical equation for this reaction is:
\text{CaCO}_3(s) \xrightarrow{\Delta} \text{CaO}(s) + \text{CO}_2(g)$
Other options are incorrect because:
- Photo decomposition uses light.
- Exothermic reactions release heat (this reaction requires heat, making it endothermic).
- Electrolytic decomposition uses electricity.
Therefore, the decomposition of calcium carbonate on heating is a thermal decomposition reaction.
Similar Questions
- Which chemical process results in the formation of plaque on copper, the rusting of iron and the blackening of silver?
- What is oxidization?
- With which substance does silver react and turn black?
- Which of the following determines that a chemical reaction has not taken place?
- Which of the following solutions has the highest concentration of hydrogen ions?
- Which of the following product is formed due to burning of a magnesium ribbon with a spirit lamp?
- ________ is not a chemical change.
During the electrolysis of water, hydrogen and oxygen are released in which ratio?
When dilute Hydrochloric acid (HCl) reacts with Sodium Hydrogen Carbonate (NaHCO3), which is the product formed along with Sodium chloride (NaCl) and Water (H2O)?
Which metal reacts violently with cold water, producing a metal hydroxide, hydrogen gas, and enough heat for the hydrogen to catch fire?
Important Questions from Chemical Reaction
- Which one of the following is not an example of a redox reaction?
- Which one of the following is not a pigment?
- Which one of the following reactions is an example of decomposition reaction?
Match List I with List II and select the correct answer using the code given below the Lists:
LIST I
(Chemical process)
LIST II
(Reaction)
A.
Electrolysis of water
1.
Double displacement
reactionB.
Burning of coal
2.
Combination reaction
C.
Iron nail immersed in copper sulphate solution
3.
Decomposition reaction
D.
Addition of barium chloride solution to aluminium sulphate solution
4.
Displacement reaction
Consider the following reaction:
Fe2O3(s) + 2Al(s) → 2Fe(s) + Al2O3(s)
Which of the following statements about the given reaction is NOT correct?
