Purpose: Find crystallization temperatures for 7 concentrations of KNO3 and make a solubility graph

Materials: KNO3, test tube, stir rod, weigh boats, hot plates, thermometer, 10 mL graduated cylinder.

Procedure:

-In two test tubes, put exactly 5 mL water in each

-Put assigned amount KNO3 in each

-Heat in hot water bath until dissolved- you may stir with sitr rod

-Find crystallization temperature as test tube cools -use a cold water bath for lower concentrations

Table:

Grams KNO3Grams H2OGrams KNO3 per 100g H2OActualCrystallization Temp.Class Average
25402425, 24, 2424, 26, 23, 24
35603841, 40, 33, 4642, 37, 38, 40
45804955, 50, 5549, 51, 50, 53
551005757, 66, 6459, 57, 62, 62
651206671, 71, 6466, 66, 64, 72
751407377, 70, 7173, 77, 72, 73
851607879, 77, 8081, 80, 75, 79
solubility-of-kno3-graph
Cite this article as: William Anderson (Schoolworkhelper Editorial Team), "Solubility of KNO3 Lab: Table & Graph," in SchoolWorkHelper, 2021, https://schoolworkhelper.net/solubility-of-kno3-lab-table-graph/.
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Hoseah
Hoseah
4 years ago

Does it have to be cm h2o or grams