Homework Help: Chemistry

Posted by George on Sunday, April 3, 2011 at 10:06am.

A solution is prepared by dissolving 130 g of NaNO3 in 100 g of water at 80°C. The solution is cooled to 0°C. How many grams of compound remain in solution?

How many grams of solid are formed?

Chemistry - bobpursley, Sunday, April 3, 2011 at 11:41am
This is pretty easy. WAht is the saturated level (mass NaOH3 per 100gwater). Look at the solubility curves to get that.
http://www.goldrecovery.us/images/solgraph.jpg

Then, that point tells you how much is still in solution.

The difference is how much precipated.
Chemistry - Pob, Sunday, April 3, 2011 at 11:53am
do i find out what the saturated level is for 80C or 0C

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