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How do you find out the concentration of a colored solution without titration or colorimetry?
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∙ 15y ago
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∙ 15y ago
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Why you use starch as indicator in iodometric titration?
Because starch forms a dark blue colored soluble product with free iodine, so that the appearance of color in the solution from this reaction effectively shows when all the substances in the solution that react more strongly with iodine than does starch have been consumed and the titration is finished.
True or false As the concentration of a colored solution increases the absorbance value decreases?
Absorbance rises with concentration because there is more material for a given frequency of light to be absorbed in. Your statement is false.
Explain how a colored solution may be decolorized?
It depends on why the solution is colored. If it's colored due to the presence of transition metal ions, you may be able to change the color but not render it colorless. If it's colored by a dye, then adding some kind of chemical bleach such as a peroxide will probably work.
Which salt contains an ion that forms a colored solution?
Most transition metals form colored ion-complexes.
What is the dark colored substance that is formed when lead II acetate is added to the test solution?
Lead (2) Sulfide
Can colorimetry be used to test concentration of citric acid?
It can be if you can convert the citric acid to a chromophore, i.e., something that is colored. Otherwise, you cannot.
Why you use starch as indicator in iodometric titration?
Because starch forms a dark blue colored soluble product with free iodine, so that the appearance of color in the solution from this reaction effectively shows when all the substances in the solution that react more strongly with iodine than does starch have been consumed and the titration is finished.
True or false As the concentration of a colored solution increases the absorbance value decreases?
Absorbance rises with concentration because there is more material for a given frequency of light to be absorbed in. Your statement is false.
What is complexometry?
A chemical technique using the formation of a colored complex to indicate the end of a titration.
What is compleximetric titiration?
Complexometric titration is also known as chelatometry. It is a form of volumetric analysis in which the formation of a colored complex is used to indicate a titration's end point.
How can you determine strength of more than one colored complex using spectrophotometric titration?
Each colored complex has a different maximum of absorption.
How is the color of cytoplasm in osmosis distributed?
Osmosis is the passage of water from the region of high water concentration through a semi permeable membrane to a region of low water concentration. So the water will move from area of higher colored concentration to a lower colored concentration.
Explain how a colored solution may be decolorized?
It depends on why the solution is colored. If it's colored due to the presence of transition metal ions, you may be able to change the color but not render it colorless. If it's colored by a dye, then adding some kind of chemical bleach such as a peroxide will probably work.
What is the name of investigating colored substances?
Paper (Adsorption) Chromatography or Thin Layer Chromatography (TLC) or Solid-Liquid Chromatography (SLC)
Does the reaction KCl Na2S result in a colored solution?
No, there is no reaction/
Does a mixture that is usually transparent and is evenly colored describe a solution?
yes
What are the signs of chemical change if you combine a steel to the solution?
This depends on the nature of solution; when the sample react with an acid the mass decrease and the solution become colored.
