Calculating the Resulting pH

Calculating the pH of the resulting solution when Hydrochloric Acid is mixed with Sodium Hydroxide. First step is to calculate which solute is in excess and how much of the excess reagent is remaining after neutralisation has occurred. From this we then were able to use the equilibrium constant for water to determine the concentration of hydrogen ions were remaining in solution and then from that calculate the resultant pH of the solution. I hope the example helps :)