I have the solubility curve of potassium nitrate (the units are in g/100g for the solubility, and the temprature in degrees C)
How would i find the mass of water needed to dissolve 100g of potassium nitrate at 40 degrees C?
Many thanks!!
Answer:
From the solubility curve of KNO3 you can see that at 40°C the solubility of the salt is 60 g / 100 g of H2O
to dissolve 100 g of KNO3 at 40°C we use the proportion :
60 : 100 = 100 : x
x = 166.7 g of water needed to dissolve KNO3 at 40°C
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