Question

Which of the following describes what happens to the atom that was displaced in the reactant compound during a single replacement chemical reaction?
It becomes part of the new product compound.


It becomes the uncombined element in the product.


It breaks down in to smaller atomic particles.


It is dissolved.

Answer 1

Answer:

Explanation:

A single replacement reaction, sometimes called a single displacement reaction, is a reaction in which one element is substituted for another element in a compound. The starting materials are always pure elements, such as a pure zinc metal or hydrogen gas, plus an aqueous compound. When a replacement reaction occurs, a new aqueous compound and a different pure element will be generated as products.

Answer 2

Answer: It becomes the uncombined element in the product.

Explanation:

The reaction between Zn and HCl is a single displacement reaction according to equation below

Zn + 2HCl —> ZnCl2 + H2

Zn displaces H2 from acid and in the product, hydrogen became the uncombined element.