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| Solutions, Molarity and Intermolecular Forces | 7 mins | 0 completed | Learn |
| Henry's Law | 20 mins | 0 completed | Learn Summary |
| Calculate Molarity | 27 mins | 0 completed | Learn Summary |
| Mass Percent | 10 mins | 0 completed | Learn |
| Molality | 15 mins | 0 completed | Learn |
| Mole Fraction | 14 mins | 0 completed | Learn |
| The Colligative Properties | 45 mins | 0 completed | Learn |
| Additional Practice |
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| Making Solutions |
| Freezing Point Depression |
| Colloid |
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| ppm |
| The Freezing Point Depression |
| Boiling Point Elevation |
You need to make a solution that freezes at -125.0 °C. How many grams of CaCl2 salt must you add to 68.0 g of ethanol (C2H6O) to make a solution that freezes at -125.0 °C?
Reminder: Pure ethanol freezes a -114.1 °C. For ethanol: KF = 1.99 °C/m KB = 1.22 °C/m
Molar masses: Ethanol = 46.07 g/mol; CaCl2 = 110.98 g/mol
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