Concentration for reactants: KMnO4+Sugar+NaOH

[dicktoosh]

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.

 

[Borek]

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.

 

[dicktoosh]

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

 

[Borek]

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.

 

[DeeNos]

I would like to begin by explaining the concept of concentration in chemical reactions. Concentration refers to the amount of a substance present in a given volume or mass of a solution. In this case, we are dealing with a mixture of KMnO4, sugar, and NaOH. The concentration of each of these substances will affect the rate of the reaction.

The rate of a chemical reaction is affected by the concentration of the reactants. Generally, an increase in the concentration of reactants leads to an increase in the rate of the reaction. This is because a higher concentration means there are more particles colliding with each other, increasing the chances of successful collisions and therefore, a faster reaction.

For this lab, I would recommend starting off with equal concentrations of KMnO4, sugar, and NaOH. This will allow us to observe the effects of changing the concentration of each individual substance.

To change the concentration of sugar, we can dilute it with water. Diluting the sugar will decrease its concentration, and we can vary the amount of water added to change the concentration. For example, we can start with a 1:1 ratio of sugar and water, and then increase the amount of water in increments of 10% to create solutions with different concentrations of sugar.

Similarly, we can vary the concentration of NaOH by diluting it with water. However, it is important to note that NaOH is a strong base and should be handled with caution. We can start with a 1:1 ratio of NaOH and water and then increase the amount of water in increments of 10% to create different concentrations of NaOH.

As for KMnO4, it is a strong oxidizing agent and should also be handled with caution. We can start with a lower concentration of KMnO4 (e.g. 0.1M) and then increase the concentration in increments of 0.1M to create solutions with different concentrations of KMnO4.

To conduct the experiment, we can mix equal volumes of the different solutions and observe the rate of the reaction. We can measure the rate by monitoring the color change of the solution (KMnO4 is purple and turns colorless when reduced) or by measuring the time it takes for a specific amount of gas to be produced.

In conclusion, the concentration of reactants plays a crucial role in determining the rate of a chemical reaction. By varying the concentrations of KMn