5 ~mL of 0.4 ~N NaOH is mixed with 20 ~mL of 0.1 ~N HCl . The pH of the resulting solution will be

Step-by-step solution

From the first law of thermodynamics, the total energy of the universe remains constant. aligned & Milliequivalents of NaOH = N ₁ ~V ₁ & =0.4 5=0.20 & Milliequivalents of HCl = N ₂ ~V ₂ & =0.1 20=0.20 aligned