2 Amount of solute is constant Amount of solvent increases DilutionAmount solute in concentrated solutionEQUALSAmount solute in dilute solutionAmount of solute is constant Amount of solvent increases
3 original solution is diluted What can say about number of solute particles in a & c?# is the same!amount of solvent has increased!
4 REMINDER: MolarityMolarity = # of moles of soluteLiters of solution
5 MC x VC = MD x VD MolarityC x VolumeC = MolarityD x VolumeD (C = concentrated D = dilute)
6 300ml of 2. 5M NaOH is diluted to 750ml 300ml of 2.5M NaOH is diluted to 750ml. Find the molarity of the diluted solution
7 Example: We are doing a lab and the procedure calls for 300ml 1 Example: We are doing a lab and the procedure calls for 300ml 1.2 M NaOH. However, all we have is a bottle of 5.5M NaOH.Anytime you work with Molarity, if have to convert to LWe have to dilute it!!!!The Equation: MC x VC = MD x VD5.5 M x VC = 1.2 M x 0.3 LV1 = (1.2 M x 0.3 L)5.5 MV1 = L = 65 mLSo what does 65 ml tell us?!
8 To prepare the 1. 2 M NaOH solution, you pour 65 mL of 5 To prepare the 1.2 M NaOH solution, you pour 65 mL of 5.5 M NaOH into your container and add water to get 300 mL final volume ( = 235 ml water added)