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5ml of ether extract Of any plant was evaporated to dryness.
The residue was dissolved by heating in 1-2ml of 50% methanol. Metallic magnesium was added to the mixture followed with 5-6 drops conc. HCl. The development of an orange colour indicates the presence of flavanones.
What else can I help you with?
Why is it necessary to heat a test tube in order for a chemical reaction to occur?
i dont know either...
Why is it that when iron is added to dilute acid the test tube turns hot?
Because there's a chemical reaction going on.
Is chemical reaction alive?
No. A chemical reaction is not alive.
How can the efficiency of a chemical reaction be expressed?
A chemical reaction is represented by a chemical equation.
What device does a chemical reaction happen in?
A test tube or a Berzelius or an Erlenmeyer beaker, a special reactor, an oven, a furnace etc.
What is the complete chemical reaction for nitrate reduction test?
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What simple test might be undertaken to check if a chemical reaction produces oxygen?
glowing splint ... if it relights then the chemical reaction produces oxygen.
What happens when man taste a diamond?
There is no chemical or physical reaction in this test.
The indicator in a test tube change colour orange to yellow what process is it?
This change in color indicates a chemical reaction taking place in the test tube. The specific reaction that caused the color change would depend on the substances present in the test tube and their chemical properties.
Why is it necessary to heat a test tube in order for a chemical reaction to occur?
i dont know either...
What is a chemical change also referred to as?
Chemical reaction
How can one predict if a precipitate will form in a chemical reaction?
One can predict if a precipitate will form in a chemical reaction by looking at the solubility of the reactants. If the product of the reaction is insoluble in the solvent, a precipitate will likely form. This can be determined by consulting a solubility table or conducting a solubility test.
What does the hot test tube indicate?
A hot test tube typically indicates that a reaction is occurring inside the test tube, as heat is often used to speed up chemical reactions. It could also indicate that a sample is being heated to change its state or to facilitate a specific chemical process. Additionally, it could suggest that the contents of the test tube are being sterilized.
How does an engine have a chemical reaction?
Combustion is a chemical reaction.
Is chemical reaction alive?
No. A chemical reaction is not alive.
Why is it that when iron is added to dilute acid the test tube turns hot?
Because there's a chemical reaction going on.
Will chewing tobacco test positive in oral swab?
no but semen mixed with blood does. it causes a chemical reaction with your breath
