Search found 5 matches

by tahaSH
Sun Feb 11, 2024 4:37 am
Forum: Chemistry forum
Topic: Chloroauric acid
Replies: 6
Views: 1620

Re: Chloroauric acid

You need about 355 ml solvent for the 0.7 g. But read how to make it What is aqua Regina it is 3 part HCl and one part HNO3 . https://en.m.wikipedia.org/wiki/Chloroauric_acid You have to do boiling until all HNO3 is evaporated as NO2, later dissolve the product again in conc. HCl to get 355 ml I ca...
by tahaSH
Sun Feb 11, 2024 4:25 am
Forum: Chemistry forum
Topic: colloidal silver
Replies: 2
Views: 1779

colloidal silver

How to prepare colloidal silver through chemical reduction, I have a
0.355L / 0.1M silver nitrate solution (AgNO3) and sodium citrate tribasic dihydrate (C6H5Na3O7·2H2O)
???
Pls help me
by tahaSH
Sun Feb 11, 2024 3:48 am
Forum: Chemistry forum
Topic: Chloroauric acid
Replies: 6
Views: 1620

Re: Chloroauric acid

I thing to figure out what is aqua Regina and the calculati8n you have to do by yourself. Calculate the moles of Gold you have then covert this to the volume of the acid to get 0,01 M Great, with the given molar mass of chloroauric acid (\(HAuCl_4\)) being 339.785 g/mol, let's recalculate the moles...
by tahaSH
Sun Feb 11, 2024 3:18 am
Forum: Chemistry forum
Topic: Chloroauric acid
Replies: 6
Views: 1620

Re: Chloroauric acid

ChenBeier wrote: Sun Feb 11, 2024 2:52 am Dissolve in aqua Regina.
"Do you have specific ingredients carry out this?"
If you don't mind pls
by details :D
by tahaSH
Sun Feb 11, 2024 1:37 am
Forum: Chemistry forum
Topic: Chloroauric acid
Replies: 6
Views: 1620

Chloroauric acid

How can chloroauric acid be prepared from a piece of gold weighing 0.7 grams? Then I want to prepare a 0.01 molar solution of chloroauric acid pls help me