SOLUBILITY CURVE OF KNO3, TABLE - St. Francis Preparatory ...
SOLUBILITY CURVE OF KNO3, TABLE
NAME
PERIOD
10/30/13
Introduction:
- Discuss solution theory including
o Water and its molecule to ion attractions
o Like dissolves like.
o Molarity
o % Composition
o Cogitative properties
o Saturated, unsaturated and supersaturated solutions
o Using table G; finding solubility, saturation points etc (see handouts).- compare salts to gasses.
o Explain the phenomenon that a solution becomes saturated as you cool it.
Data:
- Present the class data for the various masses of KNO3 used and the temperature of precipitation (saturation) of the tubes.
-
CALCULATIONS:
- Show how your solutions based in 5.0 mL of water were proportioned to 100.0 mL of water for comparison to table G.
GRAPH:
- Plot the solubility curve of KNO3 as seen in the lab data AND also plot the curve using table G values on the same graph. Use a different color or pattern for each curve. Use Microsoft excel or any graphing program. ALL STUDENTS MUST POST RESULTS ON THE SOLUBILITY FORUM, POST YOUR MASS OF POTASSIUM NITRATE IN 5 Ml AND THE TEMP. AT WHICH YOU FIRST SAW A SOLID. AVERAGE THE TEMPS FOR EACH MASS OF POTASSIUM NITRATE.
DISCUSSION:
- Calculate % error for each tube with the average class temp of saturation vs table G; assume table G is the accepted value.
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ABSTRACT:
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