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

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Discussion Overview

The discussion revolves around the conversion of iodine concentration ([I2]) to hydrogen ion concentration ([H+]) in the context of a chemical reaction. Participants are trying to determine how to calculate the time it takes for the [H+] concentration to reach 0.15 mol/L based on a provided graph of [I2] concentration over time.

Discussion Character

  • Homework-related
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant expresses the need to convert [I2] concentration to [H+] concentration to find the time for [H+] to reach 0.15 mol/L.
  • Another participant questions the necessity of converting [I2] to [H+] and seeks clarification on the original question.
  • A participant suggests that the reaction rate appears constant and proposes using a line of best fit to analyze the data.
  • There is mention of the chemical equation indicating the relationship between moles of [I2] and moles of [H+], suggesting that this could help in determining concentrations after a reaction.
  • One participant speculates that the solution may have been buffered, implying that the pH remained constant throughout the reaction.

Areas of Agreement / Disagreement

Participants express differing levels of understanding regarding the problem and its requirements. There is no consensus on the best approach to convert concentrations or the relevance of certain assumptions about the reaction conditions.

Contextual Notes

Some participants express confusion about the initial conditions and the relationship between [I2] and [H+]. The discussion includes assumptions about reaction rates and the potential buffering of the solution, which may affect the interpretation of the data.

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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!
 

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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?
 
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