Answer to Question #113585 in General Chemistry for Emma

General Chemistry

Question #113585

Calculate the pH of the solution formed when 85.0 mL of 0.500 M HCl is mixed with 155.0 mL of 0.200 M NaOH.

Expert's answer

NaOH + HCl = NaCl + H₂O

0.085 x 0.5 = 0.0425 moles.

0.155 x 0.2 = 0.031 moles.

0.0425 - 0.031 = 0.0115 moles of HCl.

pH: 1.93930215965.

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