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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: mzpinkbananna on April 05, 2005, 04:55:32 PM

Title: How many moles of particles? also electorlytes
Post by: mzpinkbananna on April 05, 2005, 04:55:32 PM

okay so im studying for my chem test, which is tomorrow and ive run into a problem that has stumped me!
i dont know how to answer this:
How many moles of particles would 3 moles of Na2So4 give in solution?
 im not quite sure how to do this, for some reason i wanted to attmept it by using the 6.02 x 10^23 but i think thats way off track- i tried a couple things but the answers i got were wrong, the answer to this problem should be 9 total moles &i would really appreciate it if someone could help me ASAP

I also was questioning, how to tell weather an electrolyte is an electrolyte, you see i understand that an electrolyte is a solution that conducts electricity, but how can you tell weather or not it conducts electricity without actually testing it?  :o

Title: Re:How many moles of particles? also electorlytes
Post by: Mitch on April 05, 2005, 05:53:56 PM

Quote from: mzpinkbananna on April 05, 2005, 04:55:32 PM

I also was questioning, how to tell weather an electrolyte is an electrolyte, you see i understand that an electrolyte is a solution that conducts electricity, but how can you tell weather or not it conducts electricity without actually testing it?  :o

It will conduct electricity if an ionic compound is dissolved in the solution

Title: Re:How many moles of particles? also electorlytes
Post by: Donaldson Tan on April 05, 2005, 08:03:07 PM

Na₂SO₄ (s) => 2Na⁺ (aq) + SO₄^2- (aq)

The above equation describes the dissolution process. One mole of sodium sulphate dissolves to produce 3moles (ie. 2 + 1) of particles in water.