Homework Help: Chemistry

Posted by Alexandria on Thursday, April 28, 2011 at 11:36pm.

2. what solution can you add to each of the following cation mixtures to precipitate one cation while keeping the other cation in sloution? write complete and net ionic equations for thr precipitation reactons that occur.

a) sr+2 (aq) anf Hg+2 (aq)
b) ca+2 (aq) and NH4+ (aq)
c) Ba+2 (aq) and Mg+2 (aq)
d) Ag+ (aq) and Zn+2 (aq)

Chemistry - DrBob222, Thursday, April 28, 2011 at 11:45pm
There is no way you can learn this without doing it the hard way. Here is a solubility chart that may help you get started. I will start one of them, c, for you.
http://www.files.chem.vt.edu/RVGS/ACT/notes/solubility_rules.html

Look at the solubility rules. The sulfates of Ba, Sr, and Ca ion are insoluble while those of Mg are soluble. (Ca is not all that insoluble). So we can add Na2SO4 to the solution and BaSO4 will ppt as a white solid. You can write the full equation. the net ionic equation is
Ba^2+(aq) + SO4^=(aq) ==> BaSO4(s)

Answer this Question

Related Questions

Chemistry!!! - Consider a solution that is 0.022 M in Fe2+ and 0.014 M in Mg+2. ...
Chemistry - I need help with getting started: 1.The crystal structure of an ...
Chemistry - Why does losing two electrons to form a +2 Cation cause the greatest...
chemistry - Consider the ionization constants hypochlorous acid (HOCl) : Ka = 3....
Chemistry - I need help with getting started: 1.The crystal structure of an ...
chemistry - Write the relevant chemical equations that will allow you to ...
chemistry - One isotope of a metallic element has mass number 59 and 31 neutrons...
Chemistry - Determine whether each cation is acidic or pH neutral. For those ...
Chemistry - Determine whether each cation is acidic or pH neutral. For those ...
Chemistry - Determine whether each cation is acidic or pH neutral. For those ...

For Further Reading

First Name:
School Subject:
Answer: