What needs to be done in order to balance this equation? HCl + Ba → BaCl2 + H2

A. Place a 2 in front of the HCl.

B. It is already balanced.

C. Place a 2 in front of the HCl and a 2 in front of the Ba.

D. Place a 2 in front of the Ba.

Place a 2 in front of the HCl.

Explanation:

The balanced equation will be;

2HCl (aq) + Ba (s) → BaCl₂ (aq) + H₂ (g)

Balancing chemical equations is a try and error process that involves placing coefficients in front of reactants or products to make sure the atoms of each element in the equation are equal on both sides of the equation. Making the number of atoms of each element in the equation equal on both sides of the equation equal ensures that the chemical equation obeys the law of conservation of mass. According to the law of conservation of mass, the mass of reactants should be equal to the mass of the products, which is achieved by balancing the chemical reaction equation. The equation given may be balanced by putting 2 in front of HCl.