What is the type of the reaction below?

BaCl2 + H2SO4 → 2 HCI + BaSO4

Double replacement

Synthesis

Single replacement

Decomposition

Double replacement

Explanation:

Synthesis reaction: two or more compounds combine to form one.

A + B → C

Decomposition reaction: one compound forms two or more.

C → A + B

Single replacement reaction: an element in one compound is replaced with another element.

AB + C → AC + B

Double replacement reaction: elements in two compounds replace each other.

AB + CD → AC + BD