Potenital Differnce between Salt Bridge and rxn

  • Thread starter Thread starter ktmtalker
  • Start date Start date
  • Tags Tags
    Bridge Salt
AI Thread Summary
The discussion focuses on calculating ion concentrations and potential difference across a membrane separating sodium palmitate and NaCl solutions. After establishing equilibrium, the concentrations of Na+ and Cl- ions were found to be 0.15 M and 0.10 M, respectively, on both sides of the barrier. However, there is uncertainty regarding the potential difference calculations, as the initial results appeared incorrect. Participants are seeking guidance on the appropriate equations to describe the equilibrium state. Clarification on these calculations and relevant equations is needed to resolve the issue.
ktmtalker
Messages
4
Reaction score
0

Homework Statement

A 0.100 M solution of sodium palmitate (C15H31COONa) is separated from a 0.200
M NaCl solution by a membrane barrier that is permeable to Na+ and Cl-, but not to palmitate
ions.

I need to calculate the concentrations of the ions on both sides of the barrier once equilibrium is established. Along with the potential difference across the membrane due to the equilibrium established above.
b.


Homework Equations





The Attempt at a Solution

To find the concentration on each side, a comparison of Na, and Cl was made, and the each side was made equal to each other. This resulted in .15 Na, and .1 Cl for each side.
To find the potential difference, equations from our data section were used, however these numbers did not seem right.
Looking for any direction on how to get through the problem. Thanks!
 
Physics news on Phys.org
What equations will describe equilbrium?
 
Thread 'Confusion regarding a chemical kinetics problem'

Thread 'Confusion regarding a chemical kinetics problem'

TL;DR Summary: cannot find out error in solution proposed. [![question with rate laws][1]][1] Now the rate law for the reaction (i.e reaction rate) can be written as: $$ R= k[N_2O_5] $$ my main question is, WHAT is this reaction equal to? what I mean here is, whether $$k[N_2O_5]= -d[N_2O_5]/dt$$ or is it $$k[N_2O_5]= -1/2 \frac{d}{dt} [N_2O_5] $$ ? The latter seems to be more apt, as the reaction rate must be -1/2 (disappearance rate of N2O5), which adheres to the stoichiometry of the...
View full post »

Thread 'Prove that evolution is constant (Provide at least two arguments to support your position)'

I don't get how to argue it. i can prove: evolution is the ability to adapt, whether it's progression or regression from some point of view, so if evolution is not constant then animal generations couldn`t stay alive for a big amount of time because when climate is changing this generations die. but they dont. so evolution is constant. but its not an argument, right? how to fing arguments when i only prove it.. analytically, i guess it called that (this is indirectly related to biology, im...
View full post »

Similar threads

How do you know what salt to use for salt bridge?
Replies
1
Views
2K
Electrodialysis with different anions
Replies
1
Views
1K
Determining Cl- and Ag+ Concentrations in A Solution
Replies
1
Views
2K
Effect of Dry Salt Bridge on Cell Potential in Galvanic Lab Experiment
Replies
2
Views
2K
Electrical conductivity of seawater depends on salinity how?
Replies
5
Views
3K
The Salty Chemistry of Kitchen Salt in Water
Replies
1
Views
2K
How does Changing Salt Bridge Solution affect observed voltages?
Replies
1
Views
8K
Identifying Undissolved Silver Halides in Precipitation Reactions
Replies
8
Views
4K
Galvanic Cells and Salt Bridges
Replies
2
Views
8K
Membrane Potential Homework: Calculating [Na+] Inside Cell
Replies
1
Views
3K

Hot Threads

Recent Insights

Back
Top