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.

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To calculate the amount of 95% ethyl alcohol required to dissolve 0.075g of sulfanilamide at 78 degrees Celsius, we can use the solubility information provided.

The solubility of sulfanilamide at 78 degrees Celsius is given as 210 mg/ml.

First, we need to convert the mass of sulfanilamide to milligrams:
0.075g = 75mg

Next, we can calculate the volume of ethyl alcohol required to dissolve 75mg of sulfanilamide:

Volume of sulfanilamide = Mass of sulfanilamide / Solubility
Volume of sulfanilamide = 75mg / 210 mg/ml
Volume of sulfanilamide = 0.357 ml

Since we are using 95% ethyl alcohol, we can calculate the required volume of 95% ethyl alcohol by dividing the volume of sulfanilamide by (1 - 0.95):

Volume of 95% ethyl alcohol = Volume of sulfanilamide / (1 - 0.95)
Volume of 95% ethyl alcohol = 0.357 ml / (1 - 0.95)
Volume of 95% ethyl alcohol = 0.357 ml / 0.05
Volume of 95% ethyl alcohol = 7.14 ml

Therefore, approximately 7.14 ml of 95% ethyl alcohol will be required to dissolve 0.075g of sulfanilamide at 78 degrees Celsius.

To calculate the amount of 95% ethyl alcohol required to dissolve 0.075g of sulfanilamide at 78 degrees Celsius, we need to consider the solubility of sulfanilamide at that temperature.

First, let's convert the mass of sulfanilamide from grams to milligrams:
0.075g = 75mg

Now, let's look at the solubility of sulfanilamide at 78 degrees Celsius, which is given as 210mg/ml. This means that 1ml of ethyl alcohol at 78 degrees Celsius can dissolve 210mg of sulfanilamide.

To find out how much 95% ethyl alcohol will be required, we can set up a proportion:

(210mg sulfanilamide / 1ml ethyl alcohol) = (75mg sulfanilamide / x ml ethyl alcohol)

Cross-multiplying:

210mg sulfanilamide * x ml ethyl alcohol = 75mg sulfanilamide * 1ml ethyl alcohol

Simplifying:

210x = 75

Dividing both sides by 210:

x = 75 / 210

x ≈ 0.36 ml

Therefore, approximately 0.36 ml of 95% ethyl alcohol will be required to dissolve 0.075g of sulfanilamide at 78 degrees Celsius.