{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Lecture 12 - Very Dilute Solutions of Acid or Base Strong...

Info icon This preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Very Dilute Solutions of Acid or Base Strong acid or Base (100% Ionized): Use initial concentration in K w expression to calculate [H 3 O + ] and [OH - ] from water autoionization. For Solutions of Weak Acid or Base: Use charge balance and mass balance equations. When [H 3 O + ] 1 x 10 -6 M, this equation reduces to the usual one: ] O [H K - ] O [H ] HA [ K - ] O [H ] O [H K - ] O [H ] HA [ ] O [H K - ] O [H ] O [H ] HA [ ] ][A O [H K 3 w 2 3 o w 2 3 3 w 3 o 3 w 3 3 - 3 a + + + + + + + + + = = = x ] HA [ x ] O H [ ] HA [ ] O H [ K o 2 3 o 2 3 a = = + +
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
2 8.1 The Common Ion Effect Recall that for polyprotic acids, the production of [H 3 O + ] from the first ionization greatly inhibits the second ionization. This general phenomenon is quite general, and is known as the “common ion effect”. Calculate the pH of 1.0 M HF (K a = 7.2 x 10 -4 ) in: a) Pure water b) 1.0 M NaF
Image of page 2
3 8.2: Buffer Solutions Buffers resist large pH changes upon addition of an acid or base.
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern