To solve this problem, we need to first determine the moles of HCl and NaOH in the solution and then find the resulting concentration of H+ or OH- ions to calculate the pH.1. Calculate the moles of HCl and NaOH:moles of HCl = volume L concentration M moles of HCl = 0.050 L 0.1 M = 0.005 molesmoles of NaOH = volume L concentration M moles of NaOH = 0.100 L 0.05 M = 0.005 moles2. Determine the reaction between HCl and NaOH:HCl + NaOH NaCl + H2OSince both HCl and NaOH have equal moles 0.005 moles , they will completely react with each other, and there will be no excess H+ or OH- ions in the solution.3. Calculate the pH of the resulting solution:Since there are no excess H+ or OH- ions, the resulting solution is neutral, and the pH is 7.