Thread Tools Display Modes
Old 12-06-2017, 11:03 AM
Cardinal is offline
Charter Member
Join Date: Apr 1999
Location: 742 Evergreen Terrace
Posts: 6,268

I'll pay for chemistry tutoring...

I'll actually send you money via PayPal or Venmo if you like, for good insight on these questions. I got AP Chemistry materials from a long time teacher who even grades the AP test, but I don't want to bother him with asking for tutoring. So I have some questions on the semester final he gave me that I'm stuck on.

The Ka for HF is 7 E-4, and Ksp for PbF2 is 4 E-8. What is the approximate Kc for the reaction? 2HF + Pb+2 <-- --> PbF2 + 2H- . All are aqueous except PbF2 is solid.


We have a reversible reaction: 2SO2 + O2 <-- --> 2SO3. All are gases.
All are put in a container so that each has a partial pressure of 1.0 atm. At equilibrium, the partial pressure of the product is 1.33 atm. What is Kp of this process?


What is the maximum amount of KCl that can be added to a 50.0 ml sample of 0.200 M Pb(NO3)2 solution before a precipitate forms? Ksp of PbCl2 is 1.3 E-5.
At times it is tempting to disregard those data that violate our preconceived notions.
Member of the SDMB '99ers. Booya.
Old 12-06-2017, 12:18 PM
engineer_comp_geek's Avatar
engineer_comp_geek is offline
Robot Mod in Beta Testing
Join Date: Mar 2001
Location: Pennsylvania
Posts: 26,643
Moderator Note

If you want to discuss the actual chemistry questions posed in this thread (without discussing the financial compensation offered), please do so in the GQ thread, which may be found here:

Last edited by engineer_comp_geek; 12-06-2017 at 12:18 PM.


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -5. The time now is 07:33 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.

Send questions for Cecil Adams to:

Send comments about this website to:

Terms of Use / Privacy Policy

Advertise on the Straight Dope!
(Your direct line to thousands of the smartest, hippest people on the planet, plus a few total dipsticks.)

Copyright 2019 STM Reader, LLC.

Copyright © 2017