Nigel Baldwin | Chemical chameleon 2 MVI 1788 @nigelbaldwin3184 | Uploaded June 2018 | Updated October 2024, 35 seconds ago.
High School Chemistry
Chameleon reaction
Add alkaline glucose solution slowly to a dilute solution of potassium manganate (VII).
To make an alkaline glucose solution:
1 Dissolve 1g glucose in 50ml distilled water
2 Add 50ml 0.4M sodium hydroxide solution
To make a potassium manganate (VII) solution:
1 Aim to produce a purple manganate solution which is not to dark in colour.
2 Add 100ml distilled water to a few crystals of potassium manganate (VII) in a 250ml conical flask.
To carry out the reaction:
Slowly add the alkaline glucose solution to the potassium manganate (VII) solution in the conical flask with swirling.
Don't add the glucose solution too quickly at the beginning. Start with a few drops added cautiously.
A variety of colours will be observed, one changing into another, hence the name for the reaction.
Further details may be found on Wikipedia:
en.wikipedia.org/wiki/Chemical_chameleon
High School Chemistry
Chameleon reaction
Add alkaline glucose solution slowly to a dilute solution of potassium manganate (VII).
To make an alkaline glucose solution:
1 Dissolve 1g glucose in 50ml distilled water
2 Add 50ml 0.4M sodium hydroxide solution
To make a potassium manganate (VII) solution:
1 Aim to produce a purple manganate solution which is not to dark in colour.
2 Add 100ml distilled water to a few crystals of potassium manganate (VII) in a 250ml conical flask.
To carry out the reaction:
Slowly add the alkaline glucose solution to the potassium manganate (VII) solution in the conical flask with swirling.
Don't add the glucose solution too quickly at the beginning. Start with a few drops added cautiously.
A variety of colours will be observed, one changing into another, hence the name for the reaction.
Further details may be found on Wikipedia:
en.wikipedia.org/wiki/Chemical_chameleon
