Question

Describe the characteristics of single replacement reaction, how it is identified, and what determines if this reaction will occur. Give an example in your response.

Answer 1

In a chemical reaction, the reactants react with each other to produce two or more products.

Single replacement reaction is also called single displacement reaction. An

uncombined element replaces another element part of compound, or when

one element displaces the other element in a compound.

A general reaction as: A + BC -> AB + C

For example: 2HCl (aq) + Zn(s) ZnCl₂(aq) + H₂(g)

(H replaces Zn)

Condition for the single replacement reactions:-

To identify a single replacement reaction easily, one more reactive element displaces another element from the compound. (Table J in reference tables)

A nonmetal can always displaces a non-metal and a metal displaces a metal.