Sodium metal reacts violently with water to form NaOH and release hydrogen gas. Suppose that 10.0 g
of Na react completely with 1.00 L of water and the
final solution volume is 1.00 L.
1.What is the molar mass of NaOH?
2.Write a balanced equation for the reaction.
3.What is the molarity of the NaOH solution formed
by the reaction?

Answer is: the equilibrium  shifts toward the reactants, to the left side of chemical reaction.it is because lead(ii) nitrate dissociates in water: pb(no₃)₂ → pb²⁺(aq) + 2no₃⁻(aq).according to lechatelier's principle, the position of equilibrium moves to counteract thechange (more lead cations, common ion), the position of equilibrium will move so that the concentration ofproducts decrease and concentration of reactants of chemical reaction increase.read more on -

D. h2o + h2o > h3o + oh- confirmed.

Aand x are the answers to your question.hope it !