Chem_208_Lecture_12_Color

Chem_208_Lecture_12_Color - PS 5 Assigned Due Next Friday...

Info icon This preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
PS 5 Assigned, Due Next Friday Today: Finishing Chapter 15; Starting Ch 16
Image of page 1

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

View Full Document Right Arrow Icon
Le Chatelier’s Principle When an equilibrium system is perturbed, the system responds by partially offsetting the perturbation. e.g. N 2 O 4 (g) 2 NO 2 (g) Δ H = 66.4 kJ Which way does equilibrium shift if: 1. Temperature is increased? N 2 O 4 (g) + heat 2NO 2 (g) 2. P TOT increased by reducing V? 3. P TOT increased by adding Argon? 4. P NO2(g) decreased by adding O 3 Shifts to right Shifts to left No change Shifts to right
Image of page 2
Iron (III)-Thiocyanate Equilibrium Fe 3+ (aq) + SCN - (aq) FeSCN 2+ (aq) yellow colorless red Mix 0.01M Fe 3+ with 0.01M SCN - 1. Add Fe 3+ 2. Add SCN - 3. Add NaOH - Fe(OH) 3 is insoluble 4. Add Hg 2+ - Hg(SCN) 2 is soluble but undissociated in water 5. Heat up solution (Reaction is exothermic) Observe red FeSCN 2+ Becomes darker red Becomes darker red Becomes less red Becomes less red Becomes less red
Image of page 3

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

View Full Document Right Arrow Icon
The Reaction Quotient For the generalized reaction: aA + bB gG +hH [ ] [ ] [ ] [ ] b init a init h init g init C B A H G Q = If Q c = K c
Image of page 4
Image of page 5
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