Asked by Andy
Please help
the question that I got is:
Calculate how much 95% ethyl alcohol will be required to dissolve 075g sulfanilamide at 78 degree Celsius. Knowing that solubility of sulfanilamide is 210 mg/ml at 78 degree Celsius, 14mg/ml at 0 Degree Celsius.
please explain.
the question that I got is:
Calculate how much 95% ethyl alcohol will be required to dissolve 075g sulfanilamide at 78 degree Celsius. Knowing that solubility of sulfanilamide is 210 mg/ml at 78 degree Celsius, 14mg/ml at 0 Degree Celsius.
please explain.
Answers
Answered by
Dr Russ
You only need to consider the solubility at 78C.
So if you need to dissolve 75 g then you need
75g/0.210 g ml^-1 = 357 ml or 360 ml to 2 sig figs.
So if you need to dissolve 75 g then you need
75g/0.210 g ml^-1 = 357 ml or 360 ml to 2 sig figs.
Answered by
Andy
thank you!
Answered by
Andy
Than from here I need to find:
Using the volume of solvent calculated in step 1, calculate how much sulfanilamide will remain dissolved in the mother liquor after the mixture is cooled to 0 degree Celsius?
Can you please explain?
Using the volume of solvent calculated in step 1, calculate how much sulfanilamide will remain dissolved in the mother liquor after the mixture is cooled to 0 degree Celsius?
Can you please explain?
Answer
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