Topic: Converting %w/v to %w/w ?? (Read 5185 times)

bojangles3 · « **on:** January 12, 2007, 06:07:24 AM »

Concentration of Sucrose in diluted Syrup = 13.5 % w/v

Wt of Syrup taken in 50cm3 = 10.10g

Concentration of sucrose in Syrup BP = ... %w/w

just not sure how to go about getting it from a dilute %w/v to undiluted %w/w
any help really appreciated
thanks

AWK · « **Reply #1 on:** January 12, 2007, 10:16:51 AM »

Quote

Wt of Syrup taken in 50cm3 = 10.10g

!?

50 cm³ of syrup weight at least 50 grams, but for more precise calculations you need a density of the syrup.
Assuming density of sirup as that of water, %w/v is equal to %w/w.

bojangles3 · « **Reply #2 on:** January 12, 2007, 10:30:02 AM »

no, there is 10.10g of syrup in the 50cm3 dilution

AWK · « **Reply #3 on:** January 12, 2007, 11:03:36 AM »

Then you can find a mass of sugar in 10.10 g of solution (density is needed for volume calculation, my guess is 1.06 g/cm³).
For a diluted solution you can assume density as 1 g/cm₃ (my guesss 1.01 g/cm³)

Borek · « **Reply #4 on:** January 12, 2007, 12:02:08 PM »

1.0501 g/mL for 13.5% w/v.

CASC rulez.

Topic: Converting %w/v to %w/w ?? (Read 5185 times)

bojangles3

Converting %w/v to %w/w ??

AWK

Re: Converting %w/v to %w/w ??

bojangles3

Re: Converting %w/v to %w/w ??

AWK

Re: Converting %w/v to %w/w ??

Borek

Re: Converting %w/v to %w/w ??

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