Question

When a 1.0 M solution of HCl is titrated with a 1.0 M solution of KOH, which is the approximate pH at the equivalent point?

Answer 1

The equivalence point is when the concentration of H⁺ in solution is equal to the concentration of OH⁻ in solution.  Since H⁺ and OH⁻ react with each other to make water (H⁺(aq)+OH⁻(aq)→H₂O(l)) the pH at the equivalence point is 7 due to everything being neutralized.  (The equivalence point only has a pH of 7 when a strong acid is being titrated with a strong base).

I hope this helps.  Let me know if anything is unclear.