Question

Which of the following reactions is balanced?

1) 2CaCl₂ + H₂CO₃ → CaCO₃ + HCl
2) CaCl₂ + 2H₂CO₃ → CaCO₃ + HCl
3) CaCl₂ + H₂CO₃ → CaCO₃ + HCl

Answer 1

The balanced equation out of the three options is 2CaCl₂ + H₂CO₃ → CaCO₃ + 2HCl.

Step-by-step explanation:

The balanced equation is:

2CaCl₂ + H₂CO₃ → CaCO₃ + 2HCl

To balance this equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation.

In the given equation, we have:

Ca: 2 on both sides

Cl: 4 on both sides

H: 2 on both sides

C: 1 on both sides

O: 3 on both sides

Therefore, option 1 is the balanced equation.