Homework Help: Chemistry

Posted by Andrzelika on Thursday, February 18, 2010 at 7:21pm.

Suppose you were given three unlabelled solutions. You know that one contains Iron (II) ions, another contains Iron (III) ions and the third has Silver ions, but you don’t know which is which. Devise a scheme by which you could identify each of the three cation solutions.

Chemistry - bobpursley, Thursday, February 18, 2010 at 7:51pm
Color: Fe+2 solutions are pale green. Fe+3 are brown to yellowish brown, unless in acidic solutions. Silver solutions are colorless.

consider looking at color:
clear>Fe+3 in acid, or silver
so dip pH paper in, if it is not acid, it is silver. If it is clear, and acidic, Fe+3
pale green> Fe+2
brown, or brown/yellow> Fe+3
Chemistry - DrBob222, Thursday, February 18, 2010 at 7:54pm
If I answer this for you then I'm doing your thinking but this question is designed to make you think. Think about reactions that iron(II), iron(III) and Ag(I) undergo which give different results. Think about the color of some of the ppts. As an example, consider adding dilute HCl (or a solution of NaCl) to the three. What will happen that might identify one or more of the ions?

Answer this Question

Related Questions

Chemistry - Suppose you want a mixture that contains 2.5 grams of iron ion and ...
Chemistry - 1. State specifically how you would make a conclusive test for an ...
Chemistry - 1. State specifically how you would make a conclusive test for an ...
chemistry(reacting masses) - it is given that there are 2moles of nitrate ions ...
Chemistry - When hypochlorite ions act as an oxidizing agent, hydroxide ions are...
chemistry - Rust contains an iron-oxygen compound in which there are three ...
chemistry - Write the balanced chemical reaction for the rusting of iron? the ...
Iron Ions - Does anyone have the tests for iron(II) and iron(III) ions lab done...
chemistry - what type of reaction is Nickel (II) ion and iron (III) ion and ...
chemistry - A one thousand liter sample of water contains one gram of iron (III...

For Further Reading

First Name:
School Subject:
Answer: