Homework Help: chemistry

Posted by Christie on Monday, October 8, 2007 at 4:55pm.

No precipitate formed when an aqueous solution of NaCl or Na2SO4 was added to the sample solution. A precipitate formed when the sample solution was made basic with NaOH. Which ion(s) are present in the sample soluiton?

[Hg2]2+
[Ba]2+
[Mn]2+

I know that all three are not, but how do I figure out what is?

chemistry - DrBob222, Monday, October 8, 2007 at 5:10pm
Hg2^+2 isn't there because it would form a ppt of Hg2Cl2 with NaCl.
Ba^+2 isn't there because it would form a ppt with Na2SO4 of BaSO4.
That only leaves one possibility.
Mn^+2 + 2OH^- ==> Mn(OH)2

Answer this Question

Related Questions

Chemistry - 500ml of 0.250M Na2SO4 solution is added to an aqueous solution of ...
Chemistry - When an aqueous solution of lithium chloride is mixed with an ...
Chemistry - Q1. What will be formed when propanone reacted with sodium ...
Chemistry - Q1. What will be formed when propanone reacted with sodium ...
Chemistry: ketone and aldehydes - Q1. What will be formed when propanone reacted...
chemistry - Calculate how many mL of the 5% w/v AgNO3* solution must be added to...
chem - 1.Aqueous solutions of sodium and copper (II) chloride are mixed together...
chemistry - A 1.0 L sample of an aqueous solution contains .1 mol of NaCl and .1...
Chem - When an aqueous solution of lithium chloride is mixed with an aqueous ...
Chemistry - A solution contains the following ions: Hg2(2+) and Fe(2+). When ...

For Further Reading

First Name:
School Subject:
Answer: