Solids: KNO3 unknown concentration, KNO3
Liquids: Tap Water, DI Water
Other: 1 burette, 1 1000 mL beaker, 5 test tubes, thermometer, heating pad
Objectives:
To shape the effect of temperature of the solvability of a salt.
To construct a solubility curve for the salt.
To determine the mass of an unknown size ideal of the salt.
Theory:
solubility is a measure of t he amount of one substance that can be change secern in a measured amount of another substance. In this experiment we atomic number 18 going to measure the solubility of KNO3 in water at various temperatures. Results can be account in different ways ranging from grams or salt breakup in a milliliter of water to grams of salt in 100 mL of H2O
In general, systems tend to go to a state of disorder or to a state of greater entropy. During the dissolving process, the particles of the solid become randomly distributed by means of the solvent in sharp contrast to their orderly correspondence in the solid state. Ion the solid state there are strong forces holding these particles together. In order to dissolve the solid, cypher must be expended to overcome these forces. When the solid has dissolved, there are attractive forces between the particles and the solvent particles. Energy is released when these forces take effect.
The pelf expertness change during dissolving is the sum of these two debate forces. For most substances, the energy to break up the attractive forces in the solid state is greater than the energy released when the particles are solvated. In these cases, addition of energy (heating) should cause an increase in solubility. If energy of solvation is greater than the energy needed to break up the solid, and so heating would decrease solubility.
Procedure:
Part 1 Solubility of KNO3
1.Weigh out 5 samples of KNO3 approximately 3.0g, 4.0g, 6.0g, 8.0g and 10.0g. Record the literal mass of each sample. Place samples in large labelled test tubes. Use a small...If you want to get a full essay, order it on our website: Orderessay
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