Concentration for reactants: KMnO4+Sugar+NaOH

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Discussion Overview

The discussion revolves around designing a laboratory experiment to investigate how the concentration of reactants, specifically KMnO4, sugar, and NaOH, affects the rate of reaction. Participants explore the necessary concentrations of each reactant and the implications of diluting sugar with water.

Discussion Character

  • Exploratory, Technical explanation, Homework-related

Main Points Raised

  • One participant seeks guidance on the appropriate amounts of KMnO4, sugar, and NaOH to use in the reaction.
  • Another participant emphasizes the need to clarify which type of sugar is being used, noting that "sugar" is a broad term that could refer to various compounds like glucose or sucrose.
  • A later reply suggests that the initial concentration of sucrose should be defined and proposes starting with concentrations of 0.01M, 0.1M, and 1M for the experiment.
  • Participants express that determining the right concentrations cannot be done without prior research or experimentation.

Areas of Agreement / Disagreement

Participants generally agree on the importance of varying concentrations in the experiment, but there is no consensus on the specific concentrations to use or the exact type of sugar involved in the reaction.

Contextual Notes

There are limitations regarding the definition of "sugar" and the lack of established procedures for the reaction, which may affect the clarity of the experimental design.

dicktoosh
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I am given a topic: rate of reaction affected by change in concentration.
We have to design a lab - come up with reactions and write a procedure
KMnO4+Sugar+NaOH
How much KMnO4 should I put in the mixture of Sugar and NaOH.
And how much Sugar and NaOH should I start of with
I am going to dilute the sugar with water -- changing the concentration of sugar?

Thank you very much.
 
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The idea of using different concentrations is right. Assuming this is a reaction between sugar (note: sugar is a very broad category, hard to tell what do you really mean: glucose? sucrose? starch?) and permanganate you can vary concentration of either reagent.

But first you need to defining the "sugar" thing and finding out the reaction.
 
Borek said:
The idea of using different concentrations is right. Assuming this is a reaction between sugar (note: sugar is a very broad category, hard to tell what do you really mean: glucose? sucrose? starch?) and permanganate you can vary concentration of either reagent.

But first you need to defining the "sugar" thing and finding out the reaction.

sorry = C12H22O11.
Want to know the initial concentration of the reaction please help
 
This formula is still not unique, but let's say you mean sucrose.

Concentrations... This is not something that can be told out of nothing. You either have to google for similar experiments, or try several different concentrations to see which works best. I would start with 0.01M, 0.1M, 1M, as they are easy to prepare by dilution and cover reasonable range.
 

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