How much KNO3 will you have to add to 100 g of water at 40° C to make a saturated solution?
4 answers
I don't have detailed temperature information available for salts. Some I can find on the web but I wonder what information you have and if I can help you answer questions using that. That would be far better than me answering the questions for you.
that's all the information i have, this is my only worksheet on the subject so i'm honestly only looking for an answer
You're in luck. Here is a web page that lists the solubility from zero C to 100 C for HUNDREDS of salts, including KNO3 and NaCl. This information will allow you to answer the questions you posted. Use the first one I answered as a template. Remember, if the solubility is larger than that dissolved the solution is not saturated. If the solubility is the same as that dissolved the solution is saturated. If the solubility is less than that dissolved the solution is saturated. Finally, if the solution contains more than can be dissolved at that temperature (sounds impossible but it happens) the solution is supersaturated.
oops. Here is the web page.
http://en.wikipedia.org/wiki/Solubility_table#P
http://en.wikipedia.org/wiki/Solubility_table#P