Question

MEDAL + FAN


Balance the following reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coefficient is "1."

Al + HCl → AlCl3 + H2

Answer 1

2Al + 6HCl ---> 2AlCl3 + 3H2

Answer 2

To balance chemical equations you must go the following:

Ensure that the number of atoms is the same on both sides, because matter cannot be created nor destroyed.

This is something that takes experience, meaning that the more you do it you'll just see what numbers work.

Al + HCl ---> AlCl3 + H2

Reactants
2Al
6H
6Cl
Products
2Al
6Cl
6H