280. mL of 1.50 × 10-2 mol L-1 hydrochloric acid is added to 135 mL of 1.75 × 10-2 mol L-1 Mg(OH)2. Calculate the volume of 5.25 x 10-5 mol L-1 of HCl to be added to this solution to make it a neutral solution.

Question

280. mL of 1.50 × 10-2 mol L-1 hydrochloric acid is added to 135 mL of 1.75 × 10-2 mol L-1 Mg(OH)2. Calculate the volume of 5.25 x 10-5 mol L-1  of HCl to be added to this solution to make it a neutral solution.