How to find Molarity: Explanation and Practice

To find the molarity (M) of a solution, you need to know the number of moles of solute and the volume of the solution in liters. The formula to calculate molarity is: Molarity (M) = moles of solute / volume of solution (in liters) 🟢 Finding Molarity given moles and liters: Convert the volume of the solution to liters if it's given in a different unit. Divide the moles of solute by the volume of the solution in liters. The result will be the molarity of the solution expressed in moles per liter (M). 🟢 Finding Molarity given moles and milliliters (mL): Convert the volume of the solution to liters by dividing it by 1000 (since 1 L = 1000 mL). Divide the moles of solute by the volume of the solution in liters. The result will be the molarity of the solution expressed in moles per liter (M). 🟢 Finding Molarity given grams and liters: Convert the mass of the solute to moles using its molar mass. The molar mass is the mass of one mole of the substance and is expressed in grams per mole. Divide the moles of solute by the volume of the solution in liters. The result will be the molarity of the solution expressed in moles per liter (M). Note that molarity represents the concentration of the solute in a solution. It indicates the number of moles of solute dissolved per liter of solution. -Chapters- Intro 0:11 Example M=mol/L 1:02 Practice Problem #1 1:22 Example: Given M and L, find moles 1:57 Given moles and mL, find M 2:49 Practice Problem #2 3:18 Given grams and L, find moles 4:33 Practice Problem #3 5:15 Recap