Solubility
Solubility Curves
show how much solute will dissolve in water at a given temperature
Table G shows a solubility curve
Solubility Curves for Gases
As temperature goes up,gases become less solublein water
Solubility Curves for solids
As temperature goes up,solids become more solublein water
How many grams of potassium nitrate will dissolve in 100 g of water at 50 degrees C?
85 grams
How many grams of potassium nitrate will dissolve in 300 g of water at 50 degrees C?
85 grams x 3 = 255 grams
How many moles of potassium nitrate will dissolve in 100 g of water at 50 degrees C?
85 grams = ? moles
K = 39gN = 14 gO3= 48g
KNO3 = 101 g/mol85g/101g/mol =.84 moles
X
On the curve =Saturated solution
XUnder the curve =Unsaturated solution
X
Above the curve =Supersaturated solution
X
XIf 130g of NaNO3
are added to 100 gof water, how manygrams will NOTdissolve?
X
XIf 130g of NaNO3
are added to 100 gof water at 30 degrees, how manygrams will NOTdissolve?
92 grams will dissolve130-92 = 38 g won’t
X
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