I have Chemistry question

Question

Calculate the pH and the pOH of an aqueous solution that is 0.050 M in HCl(aq) and 0.090 M in HBr(aq) at 25 °C.

Answer 1

You should add H⁺ ions produced by both HBr and HCl that gives a total concentration of H⁺

pH = -log (H⁺) = -log(0.14) = 0.85 and pOH is = 14- 0.85= 13.15