Example: The Reaction of Solid Aluminum with Aqueous Sulfuric Acid to Form Aqueous Aluminum Sulfate and Hydrogen Gas

• Balance Al next. Since there are 2 Al atoms on the right side of the equation, place a 2 in front of Al on the left side of the equation.

• Balance H next. Since there are 6 H atoms on the left side, place a 3 in front of H on the right side.