Question

For each of the following cases, decide whether the pH is less than 7, equal to 7, or greater than 7.
(a) Equal volumes of 0.10 M acetic acid, CH₃CO₂H, and 0.10 M KOH are mixed.
(b) 25 mL of 0.015 M NH₃ is mixed with 12 mL of 0.015 M HCl.
(c) 150 mL of 0.20 M HNO₃ is mixed with 75 mL of 0.40 M NaOH.
(d) 25 mL of 0.45 M H₂SO₄ is mixed with 25 mL of 0.90 M NaOH.