When a current is passed through a solution of salt water, sodium chloride decomposes according to the following reaction: NaCl + H2O → NaOH + Cl2 + H2 Balance the equation. Choose "blank" if no coefficient is needed. NaCl + H2O → NaOH + Cl2 + + H2

The answer to your question is 2NaCl + 2H₂O ⇒ 2NaOH + Cl₂ + H₂

Explanation:

Original chemical equation

NaCl + H₂O ⇒ NaOH + Cl₂ + H₂

Reactant Element Products

1 Na 1

1 Cl 2

2 H 3

1 O 1

This reactions is unbalanced

2NaCl + 2H₂O ⇒ 2NaOH + Cl₂ + H₂

Reactant Element Products

2 Na 1

2 Cl 2

4 H 4

2 O 2

Now, the reaction is balanced