Comparing the solubility's of copper sulphate, sodium chloride and potassium nitrate
Title: Comparing the solubility's of copper sulphate, sodium chloride and potassium nitrate
Category: /Science & Technology/Chemistry
Details: Words: 1186 | Pages: 4 (approximately 235 words/page)
Comparing the solubility's of copper sulphate, sodium chloride and potassium nitrate
Category: /Science & Technology/Chemistry
Details: Words: 1186 | Pages: 4 (approximately 235 words/page)
Comparing the solubility's of copper sulphate, sodium chloride and potassium nitrate
Background Information
Molecular solids (sugar) and ionic solids (salts) both dissolve in water. However, they both dissolve in different ways.
The intermolecular forces holding molecules of sugar together are relatively weak so when sugar is placed in water these bonds are broken and individual C12H22O11 molecules are released into solution. It takes energy to break bonds between C12H22O11 molecules and
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salt and join them with a line of best fit. Now you should have three separate
solubility curves on the same graph.
Sources of Error
Human error -it is very hard to tell the exact temperature at which crystals
come out of the solution, so mistakes here are probable. To
reduce the chance of error use the same thermometer and the
same person taking the readings.
Sources
Holman's Chemistry textbook
Class notes
Encarta
Solubility-related websites