1 / 8

Tuesday, April 30 th : “A” Day Wednesday, May 1 st : “B” Day Agenda

Tuesday, April 30 th : “A” Day Wednesday, May 1 st : “B” Day Agenda. Homework questions/collect Finish section 15.2 Section 15.2 workday: Practice pg. 545: 1,2,4 Sec. 15.2 review, pg. 547: #1-12 Concept Review: “Acidity, Basicity, and pH” Quiz over section 15.2 next time….

miya
Download Presentation

Tuesday, April 30 th : “A” Day Wednesday, May 1 st : “B” Day Agenda

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. Tuesday, April 30th: “A” DayWednesday, May 1st: “B” DayAgenda • Homework questions/collect • Finish section 15.2 • Section 15.2 workday: • Practice pg. 545: 1,2,4 • Sec. 15.2 review, pg. 547: #1-12 • Concept Review: “Acidity, Basicity, and pH” Quiz over section 15.2 next time…

  2. Measuring pH • We know how to calculate the pH from the [H3O+] or [OH-], but can we calculate the [H3O+] or [OH-], if we know the pH? You bet your buttons we can!

  3. Measuring pH • The pH equation may be rearranged to calculate the hydronium ion (H3O+) concentration from the pH. [H3O+] = 10−pH

  4. Sample Problem C, pg. 545Calculating [H3O+] and [OH-] from pH • What are the concentrations of the hydronium and hydroxide ions in a sample of rain water that has a pH of 5.05? [H3O+] = 10−pH [H3O+] = 10-5.05 [H3O+] =8.91 X 10-6 M Kw = [H3O+] [OH-] = 1.00 X 10-14 (8.91 X 10-6 M) [OH-] = 1.00 X 10-14 [OH-] = 1.12 X 10-9 M (3 sig figs)

  5. Additional Example • If the pH of a solution is 8.1, what is [H3O+] in the solution? What is the [OH-] in the solution? [H3O+] = 10−pH [H3O+] = 10 –8.1 [H3O+] = 7.9 X 10-9 M Kw = [H3O+] [OH-] = 1.00 X 10-14 (7.9 X 10 -9) [OH-] = 1.00 X 10-14 [OH-] = 1.3 X 10-6 M (2 sig figs)

  6. Section 15.2 Workday • Practice pg. 545: #1,2,4 • Section 15.2 review: Pg. 547: #1-12 • Section 15.2 concept review: “Acidity, Basicity, and pH” Quiz over section 15.2 next time…

More Related