Question

Is the equation $\mathrm{Mg}+\mathrm{HCl}\to {\mathrm{MgCl}}_2+{\mathrm{H}}_2$ balanced or not?

Answer 1

The given equation is balanced or not:

• In the reaction$\mathrm{Mg}+\mathrm{HCl}\to {\mathrm{MgCl}}_2+{\mathrm{H}}_2$, there is only 1 hydrogen atom on the reactant side while only 2 hydrogen atoms on the product side.
• That is, the equation is not balanced.
• To balance the hydrogen atoms, 2 should be written as a co-efficient of the hydrogen atoms present on the reactant side.
• That is, $\mathrm{Mg}+2\mathrm{HCl}\to {\mathrm{MgCl}}_2+{\mathrm{H}}_2$, now both product and reactant side contains 2 Hydrogens.
• Hence now the equation is balanced