Question

In the reaction 2NaCl + 2H2O ? 2NaOH + Cl2 + H2, the reactants should:

Answer 1

I think the correct answer from the choices listed above is option 3. In the reaction 2NaCl + 2H2O ? 2NaOH + Cl2 + H2, the reactants should weigh the same as the products. This is to agree with the law of conservation of mass where mass in should be equal to mass out.