SCIENCE
CHEMISTRY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Which one is a decomposition reaction?
|
|
H2O
|
|
|
HC+O2
|
|
|
4Fe+3O2
|
|
|
None of the above
|
Explanation:
Detailed explanation-1: -Water undergoes decomposition during electrolysis and forms hydrogen and oxygen gas in the ratio 2:1 by volume. The reaction occurs as follows: 2H2O→2H2+O2.
Detailed explanation-2: -Another decomposition reaction occurs when water (H2O) breaks down to produce hydrogen (H2) and oxygen (O2) gases (see Figure below).
Detailed explanation-3: -A decomposition reaction can be defined as a chemical reaction in which one reactant breaks down into two or more products.
Detailed explanation-4: -CO2 + H2O → H2CO3 Page 3 Decomposition-compound (reactant) breaks down into 2 or more simpler substances.
There is 1 question to complete.