Acid-Base Titrations

Acid-Base Titrations A 30.00 mL sample of 0.125 M HCOOH is being titrated with 0.175 M NaOH. What is the pH after 21.4 mL of NaOH has been added? Ka of HCOOH = 1.8 × 10−4 - Answer- 8.30 For the titration of a strong acid with a strong base, the pH at the half-equivalence point volume is _________. - Answer- acidic The titration of HCOOH with NaOH produces a salt and water. The resulting salt is _________. - Answer- basic A 30.00 mL sample of 0.125 M HCOOH is being titrated with 0.175 M NaOH. What is the pH after 0 mL of NaOH has been added? Ka of HCOOH = 1.8 × 10−4 - Answer- 2.32 A 20.00 mL sample of 0.150 M NH3 is being titrated with 0.200 M HCl. What is the pH after 25.00 mL of HCl has been added? Kb of NH3 = 1.8 × 10−5 - Answer- 1.353 A 25.00 mL sample of 0.175 M HCl is being titrated with 0.250 M NaOH. What is the pH after 25.00 mL of NaOH has been added? - Answer- 12.573 A 20.00 mL sample of 0.150 M NH3 is being titrated with 0.200 M HCl. What is the pH after 15.00 mL of HCl has been added? Kb of NH3 = 1.8 × 10−5 - Answer- 5.16 A 25.00 mL sample of 0.175 M HCl is being titrated with 0.250 M NaOH. What is the pH after 19.00 mL of NaOH has been added? - Answer- 11.92 In the titration of a weak acid with a strong base with a 1:1 ratio, when does pH equal the pKa? - Answer- At half the volume it takes to reach the equivalence point A 30.00 mL sample of 0.125 M HCOOH is being titrated with 0.175 M NaOH. What is the pH after 11.2 mL of NaOH has been added? Ka of HCOOH = 1.8 × 10−4 - Answer- 3.78 A 30.00 mL sample of 0.125 M HCOOH is being titrated with 0.175 M NaOH. What is the pH after 30.0 mL of NaOH has been added? Ka of HCOOH = 1.8 × 10−4 - Answer- 12.398 For the titration of a weak acid with a strong base, the pH at the equivalence point is _________. - Answer- basic A 20.00 mL sample of 0.150 M NH3 is being titrated with 0.200 M HCl. What is the pH after 20.00 mL of HCl has been added? Kb of NH3 = 1.8 × 10−5 - Answer- 1.602