# Solubility Curve

```Name: ________________________________ period: __________
3. Look at the curves and see; how many grams of NH4Cl could
dissolve in 100 g of water at 50oC? __50 g____
Solubility Curve - NOTES
4. Which chemical would be considered most soluble?
Potassium nitrate, potassium iodide, sodium nitrate or sodium
chloride _KI (potassium iodide)_
5. If your car is covered in salt would it be worth it to use hot
water to dissolve it or does cold water work just fine? (NaCl)
_doesnt matter (solubility of salt doesn’t change much from
hot to cold)
6. Use the graph to determine if it is possible to dissolve 50 grams
of potassium chloride in 100 grams of water at 40oC?
No – if 50 g is dissolved, then it would be a
supersaturate solution
7. Is a solution made of 50 grams of KNO3 in 100 grams of water
at 50oC saturated, unsaturated or super saturated?
Unsaturated
8. At what temperature would a solution made of 100 grams of
sodium nitrate in 100 grams of water be “saturated”? _37 ˚C_
9. Look up the ratio and determine how much water is necessary
to completely dissolve 200 grams of potassium chloride at
40oC?
(at 40oC a saturated solution of KCl has what ratio of
solvent to solute? __40/100__ )
1. Look at the table above: for most materials how does
temperature affect solubility? ____________________
___Increase in temperature increases solubility_____
2.
There are four compounds listed that don’t follow the general
trend: list them: __HCl, NH3, SO2 (gases)______________
Also Na2SO4
40 g KCl
100 g H2O
=
X = 500 g H2O
200 g KCl
X
```