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Which equation is a decomposition reaction?

Li2CO3 --Li2O + CO2
Zn + HCl -- ZnCl2 + H2
Na2O + CO2 -- Na2CO3
C6H12O6 + O2 --CO2 + H2O

User Mohanavel
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2 Answers

3 votes

Decomposition means a reactant is broken down. Therefore, the Li2CO3 equation is the correct one.

User Mario Menger
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2 votes

Answer:
Li_2CO_3\rightarrow Li_2O+CO_2

Step-by-step explanation:

Decomposition is a type of chemical reaction in which one reactant gives two or more than two products.


A\rightarrow B+C

1.
Li_2CO_3\rightarrow Li_2O+CO_2 is an example of decomposition.

2.
Zn+HCl\rightarrow ZnCl_2+H_2 is an example of single replacement reaction in which more reactive element displaces the less reactive element from its salt solution.

3.
Na_2O+CO_2\rightarrow Na_2CO_3 is an example of synthesis reaction in which two reactants are combining to form one product.

4.
C_6H_(12)O_6+O_2 \rightarrow CO_2+H_2O is an example of combustion in which fuel is reacted with oxygen to form carbon dioxide and water.

User SergeS
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7.7k points