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10 Cards in this Set
- Front
- Back
Concentration of solutions can be measured in... |
g/dm^3 mol/dm^3 |
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Volume can be measured in.. |
dm^3 or cm^3 |
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1000cm^3 is ... dm^3 |
1 |
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How would you dilute a solution? |
Add more Solvent |
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Why do we need to dilute? |
in food: So tastes are correct So the formula doesn't harm the baby In medicine: To avoid overdoses |
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The more concentrated a solution... |
The more crowded the solute particles are. |
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Equation for Concentration |
Concentration = Moles/Volume |
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How much solvent would you need to add to dilute 1dm^3 of a 1mol/dm^3 solution to 0.1 mol/dm^3? |
1mol/dm^3 * 1dm^3 = 1 mol of solute 1mol/0.1 mol/dm^3 = 10 dm^3 10-1 = 9 dm^3 needs to be added. |
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How can you convert 28g of Salt to a mass of sodium? |
NaCl = 28 RFM Na = 11 RFM 11/28 *100 = 39.29% 28 * 39.29% = 11g of Sodium |
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Why might a conversion of Salt to sodium be inaccurate? |
Sodium ions can come from other sources. |