Potassium Manganate colour when reduced?

should go colourless (Mn²⁺_(aq) formed) :smile:

Reply 2

EierVonSatan

should go colourless (Mn²⁺_(aq) formed) :smile:

Essentially this is correct. Although Mn²⁺ actually forms a very pale pink solution, the dilution is usually such that it appears virtually colourless.

Reply 3

Rosh_123

colourless

Reply 4

Draconis

Colourless. It's a test for a double bond in a hydrocarbon is it not?

Reply 5

charco

Essentially this is correct. Although Mn²⁺ actually forms a very pale pink solution, the dilution is usually such that it appears virtually colourless.

Are you at oxford?

Reply 6

Draconis

Colourless. It's a test for a double bond in a hydrocarbon is it not?

You are thinking of Bromine solution.

Pottasiu manganate - reducing agent.

Reply 7

Draconis

DeanK2

You are thinking of Bromine solution.

Pottasiu manganate - reducing agent.

I'm pretty sure Potassium Manganate is one also. Acidified, that is.

Reply 8

DeanK2

Are you at oxford?

very, very cold - I'm about 2000 miles from Oxford...

but I will be in Oxford in about 3 days

Reply 9

charco

Essentially this is correct. Although Mn²⁺ actually forms a very pale pink solution, the dilution is usually such that it appears virtually colourless.

Yeah, good point :smile:

Though I do this type of oxidation in neutral/basic conditions and it gives me the horrible brownness of MnO2 :shifty:

Reply 10

charco

very, very cold - I'm about 2000 miles from Oxford

Someone doing chemistry was a runner - and he had the nickname Charco??? Was this you???

Reply 11

Draconis

I'm pretty sure Potassium Manganate is one also. Acidified, that is.

Nope it is not. Bromine solution crudely test for c double bonds, while pottasium manganate has no affect on c double bonds.

Reply 12

DeanK2

Someone doing chemistry was a runner - and he had the nickname Charco??? Was this you???

He must have been a good runner to be 2000 miles away by now!

Reply 13

m1nty

colourless dawwwwwwwg :cool:

Reply 14

DeanK2

Someone doing chemistry was a runner - and he had the nickname Charco??? Was this you???

I think charco is a slightly seasoned graduate (at least once over :p:

) Dean

No offence charco, correct me if I'm horribly wrong :smile:

Reply 15

EierVonSatan

I think charco is a slightly seasoned graduate (at least once over :p:

) Dean

No offence charco, correct me if I'm horribly wrong :smile:

I'll take 'slightly seasoned' with a pinch of salt...

no offence taken. :smile:

Reply 16

Draconis

DeanK2

Nope it is not. Bromine solution crudely test for c double bonds, while pottasium manganate has no affect on c double bonds.

Really? Anyone care to verify this?
I'm so sure I've read that it is..

Reply 17