what are concentrations of species in 0.04M sodium sulfate in water?

sarah1004 · Nov 2, 2009, 08:42 AM

I am confusing on this problems.
Could you please help me that how to do this one?

Thanks

Unknown008 · Nov 2, 2009, 09:22 AM

40 mole / 1000 mL = 40M

1L = 1000 mL

So, 0.04mol/L is the same thing as 0.04mol/1000mL and is the same thing as 0.04 M

sarah1004 · Nov 8, 2009, 03:17 PM

so answer is just like 0.04mol/L and 0.04mol/1000mL , these?

pramod awasthi · Nov 8, 2009, 10:08 PM

Quote:

Originally Posted by sarah1004

I am confusing on this problems.
Could you please help me that how to do this one?

Thanks

ok I think i have not understand ur question but just try
mlarity=gramwt*1000/molecular wt*volume (in litr)
but molarity given means somean concentration given want to know in gramm then ti will
.04*142=5.68 gm/L

sarah1004 · Nov 8, 2009, 10:26 PM

on my book, it says only like" what are concentrations of species in 0.04M sodium sulfate in water? " this.. So thats why i was confusing..

Unknown008 · Nov 9, 2009, 05:59 AM

Hmm, if the question looked for the concentration in grams per litre, then that would be right. But the question itself... I don't know what is it looking for exactly.

Or perhaps the concentration of each of the ions in the solution?

sarah1004 · Nov 9, 2009, 06:17 PM

yes 0.040moles is correct >.<



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