[mr diaz]

Question:-


2 transparent solutions

when one of them comes into contact with the other

it produces a red solution


How is this done ?

[nj_bartel]

chemical reaction takes place that forms a soluble substance generating a chromate ion?

[mr diaz]

chemical reaction takes place that forms a soluble substance generating a chromate ion?

But what would be the 2 different solutions then ?

[DrCMS]

More likely is a pH indicator.  Was it a deep red or more of a pink/violet
eg Solution a = Phenolphthalein in water
Solution b = dilute sodium hydroxide.

[mr diaz]

More likely is a pH indicator.  Was it a deep red or more of a pink/violet
eg Solution a = Phenolphthalein in water
Solution b = dilute sodium hydroxide.

It was more like blood than anything else

I used it in a magic trick years ago, solution A on the arm, solution B on the knife

take into account that these came into contact with the skin with no burning etc etc 

[pantone159]

It was more like blood than anything else

Ah, I bet ferric thiocyanate complex is involved.

a) solution of some thiocyanate (e.g. KSCN), colorless.
b) solution of ferric ion.  Would have some color but if dilute may not be noticeable.

Combine, and a deep red-brown color results, that looks just like blood (and Br2) to me.

[billnotgatez]

I Googled "water to wine magic trick" and got several hits to include these



http://www.youtube.com/watch?v=X-_X6iqmHEE

http://www.professorwonder.com/magic3.htm