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KCl
Degrees
Celcius
Approximately 42 grams of KCl can dissolve in 100 grams of water at 80°C.
Approximately 200 grams of KNO3 can be dissolved in 100 ml of water at 50 degrees Celsius.
According to the CRC Handbook of Chemistry and Physics, 58th Edition, 35.7 grams of sodium chloride (NaCl) can be dissolved in 100.0 grams of pure water at 0 degrees centigrade (page B-159). At 199 degrees centigrade the amount able to be dissolved increases to 39.12 grams of NaCl.
To find the amount of KCl that remains in solution at 20 degrees Celsius, you can use the principle of solubility. Calculate the maximum amount of KCl that can dissolve in 200g of water at 20 degrees Celsius using a solubility chart. Once you have this value, compare it to the initial 80g of KCl to determine how much remains in solution after cooling.
Solubility increases with temperature, but the solubility of sodium chloride in water is 316 grams per litre at 0 degrees Celsius, and 330 grams per litre at 70 degrees Celsius. Since room temperature is somewhere between these two, this gives upper and lower limits of the solubility at room temperature. 50 grams of water has a volume of 50 cubic centimetres, or 0.05 litres. In one litre you could dissolve between 316 grams and 330 grams, so in 0.05 litres you could dissolve between 15.8 and 16.5 grams, where 15.8 = 316 x 0.05 and 16.5 = 330 x 0.05. So we can say it's around 16 grams of NaCl in 50 grams of water at room temperature.
260
100 g water dissolve 45,8 g potassium chloride at 50 o 0C.
The amount of solute that will dissolve in water at a specific temperature depends on the solubility of the solute at that temperature. You need to check the solubility of the specific solute at the specified temperature (in degrees Celsius) to determine how many grams will dissolve in 100 grams of water.
67.0 grams of caffeine will dissolve in 100 mL of water at 100 degrees Celsius. 100mL of water = 100g of water so.. 67.0 grams of water will dissolve in 100 grams of water at 100 degrees Celsius. I pretty sure this is right, I was searching for the answer myself and it seems to work. But more accurately you will need to find the density of water at 100 ºC which is 0.9584 g/mL. So, 100g/0.9584 g/mL equals about 104 mL. Then 104 mL x 67.0g/100 mL = 69.9 g.
Instead of waiting for the answer, I ended up solving it. lol 300grams of H20 X 110grams of KNO3/100 grams of H20 = 330 grams of KNO3 The grams of H20 both cancel out and leave you with 330 grams of KNO3 Containing the solubility of KNO3. At 60 degrees celsius the KNO3 grams were 110, which is (over) / 100grams of H20. Hope this helps with this workbook problem :)
The solubility of poassium nitrate in water at 20 oC is 616 g/L.
The solubility of copper sulfate pentahydrate at 100 0C is 114 g/100 g water.
Approximately 42 grams of KCl can dissolve in 100 grams of water at 80°C.
Approximately 34 grams of KCl can dissolve in 100g of water at 30°C.
20
360
Approximately 39 grams of sodium chloride can be dissolved in 100 grams of water at 95 degrees Celsius.