Question

Classify the following reaction:

2H2O 2H2 + O2

synthesis
neutralization
decomposition
single replacement

Answer 1

the arrow mark is not there but i hope it is decomposition reaction

Answer 2

The reaction of $2 \mathrm{H}_{2} \mathrm{O} \rightarrow 2 \mathrm{H}_{2}+\mathrm{O}_{2}$ is decomposition.

Explanation:

• A decomposition reaction can be defined as producing of ‘one or more substances’ from a single substance i.e., the single substance decomposes to produce ‘one or more substances’.  

• Here, the one substance can be represented as reactant and more than one or two substances can be represented as the products of the decomposition reaction.  

• For example, from the given question the two molecules of $\mathrm{H}_{2} \mathrm{O}$ got decomposed into two molecules of hydrogen and one molecule of oxygen.  

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