The following is an example of which type of chemical reaction?Na (s) + H2O (l) Imported Asset NaOH (aq) + H2 (g)

Single replacement

Decomposition

Double replacement

Combustion

The answer to your question is Single replacement

Explanation:

Data

Chemical reaction

                 Na  +  H₂O  ⇒   NaOH  +  H₂

Single replacement  is a chemical reaction in which a metal replaces the cation of a compound.

Decomposition  is a chemical reaction in which a compound forms 2 or more products.

Double replacement  in this chemical reaction two compounds react interchanging their cations and anions.

Combustion in this chemical reaction the reactants must be a compound with carbon and the other oxygen and the products must be carbon dioxide and water.

This reaction is a single replacement reaction.

Explanation:

Step 1: Data given

A single-replacement reaction is a reaction in which one element replaces a similar element in a compound. The general form of a single-replacement (also called single-displacement) reaction is:

A+BC→AC+B

A decomposition reaction is a reaction in which a compound breaks down into two or more simpler substances. The general form of a decomposition reaction is:

AB→A+B

A double-replacement reaction is a reaction in which the positive and negative ions of two ionic compounds exchange places to form two new compounds. The general form of a double-replacement (also called double-displacement) reaction is:

AB+CD→AD+BC

A combustion is a high-temperature exothermic (heat releasing) redox (oxygen adding) reaction between a fuel and an oxidant, usually atmospheric oxygen.

Whenever we complete a combustion reaction of a hydrocarbon (compound of C and H) we generally  have the same products formed: CO2 and H2O.

Na (s) + H2O (l) → NaOH (aq) + H2 (g)

This reaction is not a decomposition because we don't break down a compound.

This reaction is not a combustion because we don't oxidze a compound to form CO2 and H2O

This reaction is a replacement reaction. But only a single replacement reaction because one element replaces a similar element in a compound