why sodium chloride will precipitate from a saturated aqueous solution when sodium nitrate is dissolved in it?

Question

This is a question on my chemistry lab, any help?

If you got any info from a website, or know where i can find the info it would be a great help. I need some sort of a bibliography

Answer 1

I found a site with a chem. slide show lecture. See if it helps at all.


A precipitation reaction is a common type of chemical reaction in solution chemistry. Basically, two or more solutions are combined resulting in a reaction that produces an insoluble product, a precipitate. Typically, these types of reactions involve ionic compounds in aqueous solution. The precipitation reaction is said to occur because of the strong attractive forces certain ions have for each other. These ions combine and fall out of solution in the formation of a solid.


Also check out this site:
http://dl.clackamas.cc.or.us/ch105-04/precipit.htm

Answer 2

Dissolution reaction for sodium chloride

NaCl (s) = Na+ (aq) + Cl- (aq)

addition of any ionic sodium salt (such as sodium nitrate) will displace the above reaction to the left. So, some NaCl will be displaced away from solution.

See:

http://en.wikipedia.org/wiki/Common-ion_effect