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Published byConstance Wilcox
Modified over 4 years ago
Examples-Molarity and Dilutions
Example What is the molarity of a solution that contains 4.5 moles of sucrose in 0.750 L of water?
Example Calculate the molarity of a solution prepared by dissolving.05 moles NaOH into enough water to make a 56.78 mL solution.
You Try What is the molarity of a bleach solution containing 9.5 grams of NaOCl dissolved in 130 mL of water?
Example How many grams of CaCl 2 would need to be dissolved in 0.75 L of water to make a 1.5 M solution?
Example How many grams of NaOH do I need to make 250 mL of a 3.0 M solution
Dilutions Concentrated solutions can be diluted by adding more water or solvent. This can be calculated by the formula M 1 V 1 = M 2 V 2
Example What volume of 12 M hydrochloric acid is needed to make 15 mL of a 4.5 M solution?
Example If I add water to 90 mL of a 0.15 M NaOH solution until the final volume is 130 mL, what will the molarity of the diluted solution be?
Example How much 5 M HCl solution will be made by diluting 350 mL of 7 M HCl?
Tricks! Note that V 2 is the TOTAL volume. What if I asked how much water is added?
Example How much water must be added to make a 5 M HCl solution from 350 mL of 7 M HCl?
Example How much water must be added to make a 9 M NaOH solution from 500 mL of 12 M NaOH?
Practice: Know your vocabulary!
What is the molarity of a bleach containing 9.5 grams of NaOCl per liter of bleach? How many grams of CaCl 2 would be dissolved in 0.75 L of water.
1 Chapter 10 Acids and Bases 10.10Dilutions. 2 Dilution Diluting a solution Is the addition of water. Decreases concentration. ConcentratedDilutedSolution.
Molarity and Dilutions
Solution Concentration. Calculations of Solution Concentration: Mass Percent Mass percent Mass percent is the ratio of mass units of solute to mass units.
Molarity and Molality.
Dilutions and Percent Solutions
Taking a concentrated solution and making it less concentrated.
Topic: Dilution Do Now:
Solutions Calculations. Questions 1.What mass of NaOH is needed to make 350 mL of 0.45 mol/L NaOH solution? 2.What is the molarity if 25 g of KClO 3 is.
TOPIC: Concentration and Dilution Do Now:. Parts of a Solution SoluteSolute = dissolved substance SolventSolvent = dispersing medium.
Molarity by Dilution Diluting Acids How to Calculate Acids in concentrated form are diluted to the desired concentration using water. Moles of acid before.
Unit 10B Review Reg Chem When a solution sits out over a long period of time and water evaporates the concentration of the solution __________.
Preparing a Molar Solution
DETERMING CONCENTRATIONS OF SOLUTIONS. MOLAR Molar is mol solube/1 L solution Making molar solution 1)Add ½ of the total solvent 2)Add required amount.
Notes 15.2 Describing Solution Composition. Mass Percent Mass percent= mass of solute X 100 mass of solution = grams of solute X 100 grams of solute +
a measure of the amount of solute that is dissolved in a given quantity of solvent unit of measurement is Molarity (M) which is moles/liter can be dilute.
Concentration Units: Terms like “dilute” and “concentrated” are not specific. Percent by Mass: Mass % = mass of solute x 100 Total mass of solution Recall:
Section 15.2 Describing Solution Composition 1. To understand mass percent and how to calculate it Objective.
C. Johannesson Concentration Ch. 12- Solutions. Concentration A measure of the amount of solute dissolved in a certain amount of solvent. Concentrated.
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