Question

In the reaction _ Al + 302 + 2Al2O3 , what coefficient should be placed in front of the Al to

balance the reaction?

Answer 1

The coefficient is 2

Step-by-step explanation:

The balanced equation is;

2Al(s) + 3O₂(g) → 2Al₂O₃(s)

• The law of conservation of mass requires that all chemical equations be balanced for the mass of reactants and that of the products be the same.
• Balancing chemical equations involves putting coefficients on reactants and products.
• It makes sure that the number of atoms of each element is equal on either side of the equation.
• In this case, putting a coefficient 2 on Aluminium makes the equation balanced.
• It results in 2 Aluminium atoms and 6 oxygen atoms on either side of the equation.