Question

bacl₂ + na₂so₄ → baso₄ + 2nacl synthesis decomposition single displacement double displacement combustion

Explanation:

In a double - displacement reaction, the positive and negative ions of two ionic compounds exchange places. In the reaction \(BaCl_{2}+Na_{2}SO_{4}\to BaSO_{4}+2NaCl\), the \(Ba^{2 +}\) ion from \(BaCl_{2}\) combines with the \(SO_{4}^{2 -}\) ion from \(Na_{2}SO_{4}\) to form \(BaSO_{4}\), and the \(Na^{+}\) ion from \(Na_{2}SO_{4}\) combines with the \(Cl^{-}\) ion from \(BaCl_{2}\) to form \(NaCl\). This is characteristic of a double - displacement reaction.

A synthesis reaction is when two or more substances combine to form one product (\(A + B\to AB\)). A decomposition reaction is when one substance breaks down into two or more substances (\(AB\to A + B\)). A single - displacement reaction is when one element displaces another in a compound (\(A+BC\to AC + B\)). A combustion reaction is a reaction with oxygen (usually involving the release of heat and light, often with hydrocarbons reacting with \(O_{2}\) to form \(CO_{2}\) and \(H_{2}O\)).

Answer:

Double Displacement