Welcome to my comprehensive guide on calculating concentrations of solutions! In this video, I'll walk you through the essential concepts of percent concentrations, molarity, and molality, providing step-by-step examples and conversion factors to simplify the process.
Whether you're a student tackling chemistry homework or a professional refreshing your knowledge, understanding solution concentrations is crucial in various scientific fields. We'll start by simplifying percent concentrations, showing you how to express the amount of solute in a solution as a percentage of the total solution mass or volume.
Next we'll explore molality, another important concentration unit that accounts for the number of moles of solute per kilogram of solvent.
Finally, we'll dive into molarity, a fundamental measure of concentration based on the number of moles of solute per liter of solution. We'll guide you through calculating molarity from mass, volume, and molecular weight, empowering you to confidently handle even the most complex concentration problems. With clear examples and conversion factors, you'll learn to navigate between molarity, molality, and percent concentrations seamlessly.
Whether you're converting between concentration units or solving for unknowns in chemical equations, this video equips you with the skills to tackle any concentration calculation with ease.
Chapter Topics:
0:00 Concentrated vs Dilute!
1:44 Types of Concentration (#Percent, #Molality, and #Molarity)
3:23 Percent Solutions (m/m, m/v, and v/v)
5:15 Example of Solving for Mass Percent
7:32 Find the Mass Percent Example 2
9:15 Use Mass Percent as a Conversion Factor
11:51 Molality (mol solute/kg solvent)
13:59 Example using Molality
16:56 Total molality
19:05 Molarity (mol of solute/L of solution)
19:58 Example of Molarity
22:42 Millimolar (mM)
23:24 Converting between Concentrations (% to Molarity)
27:05 Final Thoughts
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