If 25 mL of 0.750 M HCl are added to 100.mL of 0.302 M NaOH,what is the final pH?
A) 12.96
B) 1.04
C) 13.38
D) 0.62
E) 7.00

Question

Quizplus · Accepted Answer

The moles of HCl (0.01875 mol) are less than the moles of NaOH (0.0302 mol), so the solution is basic. The excess moles of NaOH are 0.01145 mol in a total volume of 125 mL, giving a concentration of 0.0916 M. The pH is calculated from the pOH (1.04), resulting in a pH of 12.96.

If 25 ML of 0