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Test tube
Temp. at which
Crystals form
Grams of KNO3 calculated grams
per 5 ml water of KNO3 per
100 ml of water
A
1009
B
58
4
80 g
C
49
3
60 9
D
24
2
40 g
Analysis and Conclusions
1. If 5 grams of KNO, were dissolved in 5 ml of water in test tube A,
how many grams of KNO, would have to be dissolved in 100ml of
water to give the same proportion? _[CO- How many grams in test
tube B? _ 89 In test tube C? 60g In test tube D?_ 40q
Record these answers in the appropriate column in data table.
2. Prepare a graph of your data. Use the vertical axis for grams of KNO3
per 100ml of water and the horizontal axis for temperature. Your
graph should have a total of four experimental points.
3. Connect your data points with a solid line. Then use a dotted line to
extend the smooth line to O'C. The line you have just drawn is called
a solubility curve. It can be used to determine the solubility of KNO3
at any given temperature. According to your curve, what is the
solubility in grams/100ml of water of KNO,at 0.C?
4. What can you say about the shape of the solubility curve for KNO3?

Top Answer

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Tabla y gráfico de solubilidad.jpg

Test Tube
Temp at with Grams of KNO3
Calculate grams of
cristal forme
per 5 mL of water
|KNO3 per 100 ml Water
A
60
5
100
B
58
4
80
C
49
3
60
B
24
2
40
grams of KNO3 per
120
100 mL of water
100
80...

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