[vhpk]

Let's start with:
Use chemical means to know and separate each metal in the mixture: Ag, Au, Pt

[Borek]

And your approach is... ?

[vhpk]

And your approach is... ?

I don't understand your speech very much,

[english]

And your approach is... ?

I don't understand your speech very much,

You must select a method.  What is your method for separating those components? 

[vhpk]

 , yeah , I understand
A hint: there is an acid which Au and Pt don't react while Ag can react and there is also an acid which Au can react but Pt can't
Let's think

[vhpk]

@Borek: , I don't want to post the answer too early because my purpose is provide a lot of exercises for everyone.
Try and I'll post another question

[Borek]

@Borek: , I don't want to post the answer too early because my purpose is provide a lot of exercises for everyone.
Try and I'll post another question

You must be joking. I have learnt everything needed to answer this question back in seventies, do you really think I am going to 'try it'?

[english]

@Borek: , I don't want to post the answer too early because my purpose is provide a lot of exercises for everyone.
Try and I'll post another question

You must be joking. I have learnt everything needed to answer this question back in seventies, do you really think I am going to 'try it'?

Haha 

[vhpk]

@Borek: , I don't want to post the answer too early because my purpose is provide a lot of exercises for everyone.
Try and I'll post another question

You must be joking. I have learnt everything needed to answer this question back in seventies, do you really think I am going to 'try it'?

Oh, sorry, I think you don't understand, the word "try" is not for you but for another, you're admin, the first thing that anyone can see that your knowledge is very very high, so I don't mean like you say, the thing I need is the discussion of everyone, we have one difficult problem, we need sharing. In my learning, I know one thing, I consider if another knows or not, I post to the forum in order to advance and provide more knowledge for everyone, not for proving I'm good or bad, because I'm only in 10^th grade and I must also learn more and more. I know that this forum is very useful so I want to share my knowledge to each other. 

[P]

@Borek: , I don't want to post the answer too early because my purpose is provide a lot of exercises for everyone.
Try and I'll post another question

You must be joking. I have learnt everything needed to answer this question back in seventies, do you really think I am going to 'try it'?

Oh, sorry, I think you don't understand, the word "try" is not for you but for another, you're admin, the first thing that anyone can see that your knowledge is very very high, so I don't mean like you say, the thing I need is the discussion of everyone, we have one difficult problem, we need sharing. In my learning, I know one thing, I consider if another knows or not, I post to the forum in order to advance and provide more knowledge for everyone, not for proving I'm good or bad, because I'm only in 10^th grade and I must also learn more and more. I know that this forum is very useful so I want to share my knowledge to each other.

Well go ahead and share with us the answer to your question then  -  educate us on how to seperare these metals with different acids.

[vhpk]

First, using HNO₃, only Ag solubles:
3Ag + 4HNO₃ --> 3AgNO₃ + NO + 2H₂O
After that, we can use thermolysis method or electrolytic method to reproduce Ag:
AgNO₃ --> Ag + NO₂ + 1/2O₂
The mixture left has Au, Pt; we use the mixture of HNO₃ and HCl:
Au + HNO₃ + 4HCl --> HAuCl₄ + NO + 2H₂O
3Pt + 4HNO₃ + 18HCl --> 3H₂PtCl₆ + 4NO + 8H₂O
Thus, use FeCl₂:
HAuCl₄ + 3FeCl₂ --> 3FeCl₃ + Au + HCl
Reproduce Pt:
H₂PtCl₆ + 2NH₄Cl --> (NH₄)₂PtCl₆ + 2HCl
(NH₄)₂PtCl₆ --> (high temperature) Pt + 2NH₄Cl + 2Cl₂
Can you gimme a comment

[Mahmoud Abdallah]

hii all
ii want to know about hammett equation

[Borek]

ii want to know about hammett equation

Please read forum rules.