Question

k₂so₄(aq) + bacl₂(aq) → kcl(aq) + baso₄(s)
express your answer as a chemical equation. identify all of the phases in your answer. keep the order of compounds as in the original equation.

Explanation:

Step1: Balance the equation

Count the number of each atom on both sides. For K: 2 on left, 1 on right. For Cl: 2 on left, 1 on right. Add a coefficient of 2 to KCl.
$$\text{K}_2\text{SO}_4(\text{aq})+\text{BaCl}_2(\text{aq})\to2\text{KCl}(\text{aq})+\text{BaSO}_4(\text{s})$$

Step2: Check the balance

Left side: 2 K, 1 S, 4 O, 1 Ba, 2 Cl. Right side: 2 K, 2 Cl, 1 Ba, 1 S, 4 O. The equation is balanced.

Answer:

$$\text{K}_2\text{SO}_4(\text{aq})+\text{BaCl}_2(\text{aq})\to2\text{KCl}(\text{aq})+\text{BaSO}_4(\text{s})$$