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17 Cards in this Set
- Front
- Back
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Concentration |
A measure of the amount of solute that is dissolved in a given quantity of solvent |
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Dilute solution |
A solution that contains a small amount of solute |
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Concentrated solution |
A solution that contains a large amount of solute |
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Concentrated and dilute are what type of descriptions of the amount of a solute in a solution |
Qualitative.
Because 1g of NaCl per 100 g H2O is dilute compared with 30g of NaCl per 100g of H2O. 1g of NaCl may be concentrated compared to 0.01 g of NaCl. |
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Molarity |
The number of moles of solute dissolved on one liter of solution. Most important unit of concentration |
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Calculate Molarity/Molarity equation |
Molarity= moles of solute/liters of solution |
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400g of CuSO4 in 4.00 L of solution |
0.625 M |
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400g of CuSO4 in 4.00 L of solution |
0.625 M |
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Grams to moles |
Given x 1 mole/atomic weight in grams |
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Moles of solute equation |
Molarity (M) x Liters of solution (V) |
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Diluting a solution |
Reduces the number of moles of solute per unit volume, but the total number of moles of solute in a solution doesn't change |
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Moles of a solute before dilution = |
Moles of a solute after dilution |
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Moles of a solute before dilution = |
Moles of a solute after dilution |
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Moles of solute equation |
M1 x V1 = M2 x V2 |
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Another way to describe the concentration of a solution is... |
By the percent of a solute in the solvent |
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The concentration of a solution in percent can be expressed in two ways; |
As the ratio of the volume of the solute to the volume of the solution or as the ratio of the mass of the solute to the mass of the solution is expression of... |
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Percent by volume (%(V/V)) = |
(Volume of solute/volume of solution) x 100% |
