How to Convert [I2] Concentration to [H+] Concentration?

  • Thread starter Thread starter youmei0426
  • Start date Start date
  • Tags Tags
    Rate Reaction
AI Thread Summary
To determine the time it takes for the [H+] concentration to reach 0.15 mol/L, the user needs to convert the [I2] concentration data from the graph into [H+] concentration. The discussion highlights that the reaction rate appears constant, suggesting a linear relationship that can be analyzed using a line of best fit. Understanding the stoichiometry of the reaction, where one mole of I2 produces a specific amount of H+, is crucial for this conversion. The user realizes that by finding the gradient of the best fit line, they can derive the necessary information. Ultimately, the problem's context implies that the solution is buffered, maintaining a constant pH.
youmei0426
Messages
18
Reaction score
0

Homework Statement


upload_2019-1-13_13-56-47.png

upload_2019-1-13_13-56-59.png


Homework Equations

The Attempt at a Solution


I need to know the time it takes for the [H+] concentration to be 0.15mol/L. However, the graph gives me the [I2] concentration over time, and I don't know how to convert it to the [H+] concentration. How should I solve the problem? Thanks!
 

Attachments

  • upload_2019-1-13_13-56-47.png
    upload_2019-1-13_13-56-47.png
    4.8 KB · Views: 854
  • upload_2019-1-13_13-56-59.png
    upload_2019-1-13_13-56-59.png
    8 KB · Views: 1,103
Physics news on Phys.org
youmei0426 said:
don't know how to convert it to the [H+] concentration
Why would you want to do that ?
 
BvU said:
Why would you want to do that ?
I meant how to convert the known [H+] concentration to the [I2] concentration given to me by the graph. Because I need to know the time it takes for the hydrogen to reach the 0.15 mol/L concentration right?
 
2
youmei0426 said:

Homework Statement


View attachment 237248
View attachment 237249

Homework Equations

The Attempt at a Solution


I need to know the time it takes for the [H+] concentration to be 0.15mol/L. However, the graph gives me the [I2] concentration over time, and I don't know how to convert it to the [H+] concentration. How should I solve the problem? Thanks!

I don't really understand what the question is, nor your answer.
[H+] = 0.015 mol/L at t = 0 aren't you told? It takes no time to get there.
The reaction rate looks to be constant. Have you tried to draw a straight line through it, or a least squares fit?
What do you understand by relative rate?
The chemical equation is telling you one mole of I2 that reacts produces how many moles of H+? Added to the store to number it is easy to know how many starting number it is easy to know how many m moles/L there are after any amount of reaction. Though whether this is relevant depends what the question is.
 
epenguin said:
2

I don't really understand what the question is, nor your answer.
[H+] = 0.015 mol/L at t = 0 aren't you told? It takes no time to get there.
The reaction rate looks to be constant. Have you tried to draw a straight line through it, or a least squares fit?
What do you understand by relative rate?
The chemical equation is telling you one mole of I2 that reacts produces how many moles of H+? Added to the store to number it is easy to know how many starting number it is easy to know how many m moles/L there are after any amount of reaction. Though whether this is relevant depends what the question is.
Oh I think I understand it now! I just need to draw the line of best fit and find the gradient of that line. Thanks!
 
The way the problem is worded I suppose the solution was buffered and pH was constant.
 
Borek said:
The way the problem is worded I suppose the solution was buffered and pH was constant.

I impliedXvideos Youporn Xhamster how to change over the known [H+] focus to the [I2] fixation given to me by the chart. Since I have to know the time it takes for the hydrogen to achieve the 0.15 mol/L focus right?
 
Last edited:
Back
Top