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Iodine solution is primarily used as a chemical indicator for the presence of starch; it turns blue-black when starch is present. Benedict's solution, on the other hand, is used to test for reducing sugars; it changes color from blue to green, yellow, or red upon heating if reducing sugars are present. Both solutions are commonly used in laboratory settings to perform qualitative tests in food chemistry and biochemistry.
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Why the Benedicts solution is blue?
Because this solution contain copper(II) sulfate.
What molecules are present in iodine benedicts and biuret solution and brown paper bag?
Iodine solution contains iodine molecules, which react with starch to produce a blue-black color. Benedict's solution contains copper(II) sulfate, sodium carbonate, and sodium citrate, which together test for reducing sugars and produce a color change upon reaction. Biuret solution consists of copper(II) sulfate and sodium hydroxide, which react with peptide bonds in proteins to yield a violet color. The brown paper bag test detects lipids, as oil or fat will leave a translucent stain on the paper.
Why is sodium carbonate added to solution before Benedicts test is performed?
Sodium carbonate is added to increase the pH of the solution.
Which indicator would most likely yield a positive test by way of a color change in the water-cookie solution?
Benedicts solution
What compound can be oxidized by both Benedicts solution and Tollens reagent?
A reducing sugar such as glucose can be oxidized by both Benedicts solution and Tollens reagent to form a colored precipitate. This reaction is used to test for the presence of reducing sugars in a solution.
What is the indicator for carbohydrates?
Simple(sugar): benedicts solution. Turns bright orange. Complex(starch): iodine turns dark purple/black
What is benedicts solution used to find?
Glucose
Why the Benedicts solution is blue?
Because this solution contain copper(II) sulfate.
What is the test for sugar using Benedicts solution?
prosrdure of benidect solution test
How does benedicts solution react with orange juice?
cock
What is the function of sunlight in iodine solution?
Sunlight can help catalyze the reaction between iodide ions and iodate ions in an iodine solution, leading to the formation of free iodine. This reaction is important in the process of determining the concentration of vitamin C.
What is the difference between strong iodine solution and weak iodine solution?
their color
Is iodine solution ionic?
A solution of iodine is covalent.
What is the solution of tincture of iodine?
iodine
Is the weak iodine solution is tincture of iodine?
Yes, a weak iodine solution is often referred to as tincture of iodine. Tincture of iodine typically contains a 2% to 7% iodine solution in alcohol and water.
What is the composition of iodine solution?
Otherwise a solvent is stated, a solution of iodine contains only iodine molecules.
What is the difference between iodine crystals and iodine solution?
Iodine crystals are solid, crystalline form of elemental iodine, while iodine solution is a liquid mixture of elemental iodine and either alcohol or water. Iodine crystals are typically used for storage and long-term preservation, while iodine solution is commonly used for disinfection and medical purposes.
