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Sodium Ascorbate in mOsm/L?

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Simmons:
If 200 grams of Sodium ascorbate is dissolved in 1000 mL of normal saline, what would the net osmolarity in mOsm/L of the solute and what formula is used to calculate it?

Thanks.

Borek:
Per forum rules you have to show your attempts at solving the problem before receiving help.

Hint: what formulas related to osmolarity do you know?

Simmons:
Apologize for that..

I have scarce info regrading molarity..

solute weight/ molar mass= moles of solute.

In this case 50 grams of sodium ascorabte / 198.11 (gm/L) = 0.25 moles.


Osmolarity=  (total mOsm/ total mL) X (1000/L)= mOsm/L.

That's it....what do I put in since have sodium ascorbate 99% and in 0.9% saline???

Thanks.

Borek:
Hint: total osmolality is a sum of all individual osmolalities.

(That's only an approximation, that works best for diluted solutions, but I doubt you are expected to use more advanced approach).

Simmons:
total osmolality is a sum of all individual osmolalities. ..Thanks.

But I want the individual osmolarity of sodium ascorabte 200 grams 99% in .9% of saline??

Any more hints??

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