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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: Pirate on March 01, 2009, 03:38:28 AM

Title: How can you decrease solubility of poorly soluble salt?
Post by: Pirate on March 01, 2009, 03:38:28 AM

How can you decrease solubility of poorly soluble salt?


What needs to be added in the solute? Why?

Title: Re: How can you decrease solubility of poorly soluble salt?
Post by: Pirate on March 01, 2009, 07:04:05 AM

The decrease in the solubility of a salt occurs when a salt is dissolved in
a solution that already contains another source of the same ions.

For example adding AgCl to Nacl, the solubility of AgCl decreases.



Would this be an ok answer? Anything else I need to take in consideration?

Title: Re: How can you decrease solubility of poorly soluble salt?
Post by: Astrokel on March 01, 2009, 07:05:46 AM

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

Title: Re: How can you decrease solubility of poorly soluble salt?
Post by: Pirate on March 01, 2009, 12:32:07 PM

So basically adding another substance ( with the same ions ) will decrease the solubility of the other? Was this right? Sorry, English is not my first language...

Title: Re: How can you decrease solubility of poorly soluble salt?
Post by: enahs on March 01, 2009, 12:35:15 PM

If you already have an insoluble salt, why do you need to decrease its solubility?

Title: Re: How can you decrease solubility of poorly soluble salt?
Post by: Pirate on March 01, 2009, 12:42:23 PM

It's a speculative question. Doesn't necessary have to be insoluble, it can be "poorly" soluble.

Title: Re: How can you decrease solubility of poorly soluble salt?
Post by: nj_bartel on March 01, 2009, 02:30:02 PM

You're right.