How to Balance K2CO3 + CaCl2 = CaCO3 + KCl (Potassium carbonate + Calcium chloride)

Answer 1

Try starting by making a list of the atoms you have under your reaction arrow. Then write the number atom s you have in the reactant side on the left, and the product side on the right (note keep polyatomic ions together

K₂CO₃ + CaCl₂ ------> CaCO₃ + KCl

2 K 1

1 Ca 1

1 CO₃ 1

2 Cl 1

Doing this allows you to see the discrepancies we need to fix. the problem atoms right now are potassium and chlorine. If we start with the chlorine, then we need to write a 2 in front of KCl. this changes the chlorine count as well as the potassium.

K₂CO₃ + CaCl₂ ------> CaCO₃ +2 KCl

2 K 2

1 Ca 1

1 CO₃ 1

2 Cl 2

Adding the coefficient of two fixed both the K and Cl problem , this equation is balanced

Answer 2

K₂CO₃ + CaCl₂ ==> CaCO₃ + 2KCl