Question

Al + NaOH + H2O ->NaAlO2 + H2 Balance the following equation

Answer 1

2Al + 2NaOH + 2H2O gives NaAlO2 + 3H2O

Answer 2

The balanced equation is 2Al + 2NaOH + 2H₂O ⇒ 2NaAlO₂+ 3H₂.

• When 2 moles of Al reacts with 2 moles of NaOH and 2 moles of H₂O to give 2 moles of NaAlO₂ and 3 moles of H₂.
• In this way, the balanced equation is

             2Al + 2NaOH + 2H₂O ⇒ 2NaAlO₂+ 3H₂.

• All the chemical equations must be balanced due to the law of conservation of mass.
• In the chemical equation, the mass of reactants is equal to the mass of the product.
• This implies that mass can neither be created nor be destroyed in a chemical reaction.

Hence, the balanced equation is 2Al + 2NaOH + 2H₂O ⇒ 2NaAlO₂+ 3H₂.