Can someone check this for me please?

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Discussion Overview

The discussion revolves around various chemistry problems related to solubility, electrochemical cells, and ion separation procedures. Participants seek help with specific calculations, conceptual understanding, and procedural guidance in these topics.

Discussion Character

  • Homework-related
  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant presents a solubility problem involving silver sulfate, including the dissolution equation and Ksp expression, but expresses uncertainty in calculating Ksp.
  • Another participant suggests a procedure for separating ions in a solution, referencing solubility rules and activity series, but admits to a lack of confidence in their lab skills.
  • Several participants discuss an electrochemical cell setup, with questions about half-reactions, E0 values, and the significance of sulfate and nitrate ions.
  • Participants explore the roles of Ag+ and Ni2+ in half-reactions, with some confusion about balancing and the implications of oxidation and reduction processes.
  • There is a back-and-forth regarding the calculation of Ecell, with participants checking each other's work and discussing the correct approach to determine the overall reaction and EMF.

Areas of Agreement / Disagreement

Participants generally express uncertainty and confusion about various aspects of the problems, indicating that multiple competing views and interpretations exist. No consensus is reached on the best approaches or solutions to the problems presented.

Contextual Notes

Some participants mention specific assumptions related to solubility rules and the behavior of ions in electrochemical cells, but these assumptions are not universally accepted or clarified. There are also unresolved mathematical steps in the calculations discussed.

Who May Find This Useful

Students and individuals interested in chemistry, particularly those dealing with solubility, electrochemistry, and ion separation techniques, may find this discussion relevant.

  • #61
yoshi6 said:
60.05 g/mol i think
correct, what about molarity and what would you do with it to find the Hydronium concentration at equilibrium?

K_a=\frac{[H_3O^+][CH_3COO^-]}{CH_3COOH}

1.8\times10^{-5}=\frac{x^2}{\frac{[1.2/60.06]}{1.0}}

it could also be this

1.8\times10^{-5}=\frac{x^2}{\frac{[1.2/60.06]-x}{1.0}}
 
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  • #62
oh so that is where you got x^2/ [1.2/60.05]...
 
  • #63
yoshi6 said:
oh so that is where you got x^2/ [1.2/60.05]...
yep ... and have you read when you can neglect x = the concentration change?

i just calculated it and the difference was only by .09
 
  • #64
okay, makes sense, I'm just curious, what time is it over there?
 
  • #65
yoshi6 said:
okay, makes sense, I'm just curious, what time is it over there?
1AM, i'im so bored, lol. what time is it there?

i have class tomorrow but i can't sleep :-[
 
  • #66
wow...2am, I have been doing homework for hours...thank you so much for your help! I feel like I owe you a present
 
  • #67
yoshi6 said:
wow...2am, I have been doing homework for hours...thank you so much for your help! I feel like I owe you a present
naw idc, i want to be a chem tutor @ my school but i don't think i'll get hired b/c they prefer to hire professionals :( so I'm happy to help because i really don't want to forget what i learned, and i have no motivation to review on my own.

you should go to sleep, lol ...
 
  • #68
I should but I don't think I am going to yet...what school do you go to?
 
  • #69
yoshi6 said:
I should but I don't think I am going to yet...what school do you go to?
i go to a CC in Houston, lol ima PM u because i don't think they'd like chatting
 
  • #70
lol okay
 

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