If you have an unknown solution containing Na+ ions and Cl- ions, what metal ion other than Ag+ could be used to verify the presence of Cl- ions?
Answers (1)
Solubility is one thing you just have to memorize. If you go to google.com and search "insoluble chlorides", you get this table:
Soluble
Most sulfates
Most chlorides, bromides and iodides
Sodium carbonate, potassium carbonate, ammonium carbonate
Insoluble
Lead sulfate, barium sulfate and calcium sulfate
Silver chloride, silver bromide, silver iodide, lead chloride, lead bromide, lead iodide
Most other carbonates
LEAD!
ooohhh okay I think I understand now thank you
When you put stuff in water, particles float around and bump into each other. Some of those particles are soluble so they dissociate into ions. If two particles bump and the combination is soluble, they promptly dissociate again. If the combination is insoluble, it falls to the bottom (or floats, maybe). That is called "precipitate".
Other than Ag+ what can be used to verify the presence of Cl- ions?