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Potassium dichromate is orange and when it reacts with ethanol which is a primary alcohol it is going to oxidise it to form aldehyde which is colorless. so the color change is from Orange to Colorless. :)
The dark brown color is due to the formation of manganese dioxide (MnO2)
the main reason why ethanol burns differently then ethanol and water mix is mainly because when you add the water to the ethanol you are making the ethanol less potent so it will burn weaker.
ethanol is a solvent
Ethanol can reach up to 99% purity, which means highest concentration. Pure Ethanol is colorless exactly like water! Any color in ethanol is because of bad distillation or additives!
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Ethanol i.e. alcohol in its natural state is water white and transparent .
Dark Blue
Blue.
KMnO4 is pink in a solution without oxidizing reagents. Adding ethanol should change it to a brown solution. If adding ethanol can not change the solution to brown, then its environment is already acidic and will not reduce.
because... allow me to research first hahaha
Color and volatility
When potassium permagnate is added initially to ethanol, ethanol gets oxidised into ethanoic acid using potassium permagnate. Thus, decolorizing potassium permagnate. When excess is added , the color of potassium permagnate persists.
This is ethanol (C2H5OH) with some added substances to modify the color, odor and taste.
Potassium dichromate is orange and when it reacts with ethanol which is a primary alcohol it is going to oxidise it to form aldehyde which is colorless. so the color change is from Orange to Colorless. :)
Half fill a beaker with boiling water and add a large test tube that is a quarter full of ethanol. Allow the ethanol to come to a boil. Do not heat the ethanol in a Bunsen burner flame. This is not safe because ethanol is highly flammable. Take a leaf that has been sitting in good light for at least a few days, and soften in the boiling water for ten seconds or so. Then add to the ethanol, and allow to boil for about a minute until all the color disappears from the leaf. Remove the leaf from the ethanol. Put it back in the hot water to soften for 10 seconds. Spread the leaf out on a white tile and use the iodine solution to test for starch a blue-black color indicates starch is present.