Which of the following steps can be used to identify a double replacement reaction? Check whether the products are salt and water

Check whether the reactants are in acid and a base

Check if the ions of two compounds exchange places

Check if one element replaces another element in a compound

- lead + phosphoric acid = hydrogen + lead(ii) phosphate

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.