Which statement below is not true of decomposition reactions?

They usually require the addition of energy for the reaction to occur.

They produce more than one product at the end of the reaction.

They begin with more active reactants and end with less active products.

They have one compound as the reactant at the beginning of the reaction.

Question

Claudia0266889 Claudia0266889

02-11-2017
Chemistry

contestada

Which statement below is not true of decomposition reactions?

They usually require the addition of energy for the reaction to occur.

They produce more than one product at the end of the reaction.

They begin with more active reactants and end with less active products.

They have one compound as the reactant at the beginning of the reaction.

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Answer: They begin with more active reactants and end with less active products.

Explanation: Decomposition reactions are type of chemical reactions in which one reactant breaks to give two or more than two products.

In order to break the reactant molecules, energy has to be supplied in the form of heat , light or electricity and thus all decomposition reactions are endothermic reactions.

For example:

[tex]CaCO_3(s)\rightarrow CaO(s)+CO_2(g)[/tex]