How do you predict the solubilities of a substance in water? ex: NaNO3?

Answer 1

I would use a solubility table.

http://intro.chem.okstate.edu/1515SP01/Database/Solub.html

or

http://dbhs.wvusd.k12.ca.us/webdocs/Equations/Solubility-Table.html

or

http://www.chem.queensu.ca/people/faculty/mombourquette/FirstYrChem/solubility/solbilty.htm

They pretty much have all the same info though. If you look on the table you will see that the nitrate ion is soluble without any exceptions. Meaning, that if you see a compound with a nitrate in it, it will be soluble. The same applies for the sodium ion as well. There for the sodium nitrate you asked about would be soluble.

How about something insoluble for comparison. If we look on the list we see that the chloride ion is soluble, but has a few exceptions such as a silver ion. Therefore AgCl is insoluble.

I hope this helps.

Answer 2

Solubility Of Nano3

Answer 3

NaNO3 is soluble.
Ionic compounds containing alkali metal cations or ammonium ions are soluble in water
Any compound containing nitrates are also always soluble.