1 / 11

18.4 Acid-base Titrations

18.4 Acid-base Titrations. By: Chun Yi Ma and Sami Abdelkhaliq. 18.4.1. Sketch the general shapes of graphs of pH against volume for titrations involving strong and weak acids and bases, and explain their important features. Strong Base and Strong Acid Titration.

israel
Download Presentation

18.4 Acid-base Titrations

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 18.4 Acid-base Titrations By: Chun Yi Ma and Sami Abdelkhaliq

  2. 18.4.1 • Sketch the general shapes of graphs of pH against volume for titrations involving strong and weak acids and bases, and explain their important features.

  3. Strong Base and Strong Acid Titration • 25 cm3 of 0.1 M HCl titrated by 0.1 M NaOH • 25 cm3 of 0.1 M NaOH titrated by 0.1 M HCl

  4. Important Features • Equivalence Point: the point where there are exactly the same number of moles of acid and base. • Equivalence point ≠ pH 7 • Buffer region: the region where there is little change to the pH in the solution that is being titrated • pKa = pH or pKb = pOH happens in the middle of the buffer region.

  5. Weak Acid Titrated by Strong Base

  6. Weak Base and Weak Acid • 25 cm3 of 0.1 M CH3COH2 titrated by 0.1 M NaOH • 25 cm3 of 0.1 M NH3 titrated by 0.1 M HCl

  7. Strong Base and Strong Acid Titration

  8. Weak Acid Titrated by a Strong Base

  9. Weak Base Titrated by a Strong Acid

  10. Features of Equivalence Points • Strong base and strong acid titration • Equivalence point = 7 • Weak acid titrated by a strong base • Equivalence point > 7 • Weak base titrated by a strong acid • Equivalence point < 7

  11. What Can Be Deduced From This Graph? pH Equivalence Point Volume of acid added (cm3)

More Related