What happen in the reactions: Na2SO4+HCl followed by BaCl

In the given reactions, Na2SO4 reacts with HCl to form an initial product, followed by the addition of BaCl2. Let's break down the reactions step by step:

1. Na2SO4 + HCl: In this reaction, sodium sulfate (Na2SO4) reacts with hydrochloric acid (HCl). The products of this reaction are sodium chloride (NaCl) and sulfuric acid (H2SO4).

To balance the chemical equation, you can assign coefficients to each compound to have an equal number of atoms on both sides. The balanced equation would be:
Na2SO4 + 2HCl -> 2NaCl + H2SO4

2. BaCl2: We have the product sodium chloride (NaCl) from the previous reaction. Now, we add barium chloride (BaCl2) to this solution. When barium chloride is added to water or aqueous solutions, it dissociates into barium ions (Ba^2+) and chloride ions (Cl^-).

The complete chemical equation for the reaction is:
BaCl2(aq) + 2NaCl(aq) -> BaCl2(s) + 2NaCl(aq)

Upon mixing BaCl2 with the solution containing NaCl, a reaction occurs, resulting in the formation of solid barium chloride (BaCl2) while the sodium chloride (NaCl) remains in the solution.

Overall, the reactions involve the formation of sodium chloride, sulfuric acid, and solid barium chloride.