Chem help... solutions and stuff.

Test Preparation AP Test Preparation
1

<p>Adding HCl to a solution with Ag+, Hg2^2+, or Pb2+ ions causes a preciptate of AgCl, Hg2Cl2, or PbCl2. Would a solution of NaCl work as well?</p>

2

<p>NaCl dissociates completely- The Cl- Ions would bond with the Ag+, Hg2+2, and Pb+2 ions to form the salts. Both NaCl and HCl would work.</p>

3

<p>Use the solubility rules.</p>

4

<p>lildude, are you sure about that? My friend was saying something about only the HCl working because it’s an acid.</p>

<p>War Chant, how would you use solubility rules? It’s just the Cl that I know will form precipitates with the three metals.</p>

5

<p>Cl will ONLY form precipitates of silver, mercury (I), and lead; yes it would work</p>

<p>HCl is a strong acid and it disassociates completely, NaCl is just a salt so it disassociates completely and when the Cl ions basically “come into contact” with the silver, mercury and lead ions, they will form this white precipitate.</p>

<p>Lildude is correct.</p>

6

<p>Thanks :)</p>