Luminol -
Luminol is a chemical compound with the chemical composition of
C8H7N3O2 , having the
chemical structure as follows -
Luminol shows a special chemical property of chemiluminescence , i.e. , it glows with a blue color when mixed with an oxidizing agent .
Chemiluminescence , the process of emission of light in a chemical reaction .
For example ,
A and B are the reactant and P is the product .
A + B ----> [ transition state ] ----> P + light
Due its property of chemiluminescence , it is used for the forensic investigation , to detect very small amount of blood at the crime scenes , since , it has the capability to react with the iron , which is present in the hemoglobin of the human blood .
Luminol is used as ,
the white powder of the luminol is spread over the area , and then an oxidizing agent is sprayed over it , and surface starts to glow , which can easily be visualized in a dark room .
The oxidizing agent used in this process , is hydrogen peroxide (H2O2) along with hydroxide ion (OH -) , and the metal ions like iron , copper and cyanide acts as a catalyst .
Luminol itself is not an active compound , hence , it requires an activating agent i.e. the hydrogen peroxide and the hydroxide ion ,
Firstly the catalyst i.e. the metal ion , iron , reacts with the hydrogen peroxide to release oxygen and water molecules .
Then , the luminol reacts with the hydroxide ion , to form a
dianion , by loosing the acidic hydrogen .
The dianion formed then reacts with the oxygen molecule , which forms a very unstable product .
This unstable product , then rearranges and removes the nitrogen gas to form a triplet dianion species , which is present in an excited state .
Now, this triplet species , relaxes and comes back to the ground sate and emit energy in the form of blue light which is in the visible region .
And , hence , a blue color luminescence is observed .
Please help and write neatly. Will rate, thanks! What two chemicals (names and chemical formulas) are...
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Name: [Individual exercise] Chemical Nomenclatur Write the names and formulas for the following inorganic ce Part 1: Ions and Ionic Compounds Write formulas/charges or names as appropriate for each of the follow Cat o DO3 1. Calcium ion 2. Phosphide ion 3. Iodide ion 4. Gallium ion 5. Titanium(IV) ion 7. Rb 8. Pb 9. 52 10. Cr*2 Write formulas or names as appropriate for each of the following ioni 1. Magnesium nitride 2. Lithium oxide 3. Aluminum sulfite 4....
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Given two planes in space: 2x – y + z = -4 and 5x + 3y - z = 4. Find the angle between these two planes and the symmetric equations of the line of intersection of these two planes.
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Please answer 3. a and b.
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Write the structural formulas for the two geometric isomers of 2,3-dichloropent-2-ene. Write the names for both isomers
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