[Simmons]

Within 20 % error - yes.
Within 5 % error - no.

Thanks.

I'm not concerned about the error 5 or 20% but the osmolarity of sodium ascorbate in grams in the final solution.

Care to share the formula how I could measure that, and how you come up with 5-20% errors?

Thanks again.



PS: An acquaintance has tried with 100 grams in 1000 ml, with normal osmolarity of 300 mosm/l....but is away, otherwise won't have bothered you.

[AWK]

I told you - just find densities of sodium ascorbate solutions. Taking them as an approximation you can calculate osmotic concentrations with an error of about 2 % for 200 g sodium ascorbate and about 5% for 50 g of sodium ascorbate.
To lowering error you can measure densities of a few solutions with salt and then interpolate densities - this may give you the error even lower than 1 % (but this depends on the precision of measurements) but still neglecting osmotic coefficient which changes with concentration.

[Simmons]

I'm getting 1 Osmol/L, of sod. ascorbate 100 grams dissolved in 1 liter of water.

1. How much would that be in mOsmol/L?

2. How much would be Osmol/L, IF it were 0.9 % saline 1 liter?

Thanks.

[AWK]

I'm getting 1 Osmol/L, of sod. ascorbate 100 grams dissolved in 1 liter of water.

1. How much would that be in mOsmol/L?

2. How much would be Osmol/L, IF it were 0.9 % saline 1 liter?

Thanks.

1 Osmol/L - this value is accepted with an error slightly less than 5 %
Converting Osmol/L to mOsmol/L is very simple.
Osmotic concentration is additive