Molarity

Ways of expressing concentration of solutions.

1. General Chemistry 2 Ways of expressing concentration of solutions. “MOLARITY” -

2. Molarity the number of moles of  Solute  (the material dissolved) per liter of solution. - https://www.chemicool.com/definition/molarity.html

3.  is the number of moles of the solute contained in one liter of the solution . -http://www.solitaryroad.com/c1504.html Molarity

4. Example Adding salt ( NaCl ) in some volume of water (H 2 O).

5. Calculation Two information are needed: The moles of solute present in the solution. The volume of solution (in liters) containing the solute.

6. Formula

7. Example Problem: What is the molarity of a 0.40 moles of NaCl dissolved in 0.250L of water? Answer: 1.6M

8. Solution: M= M= 1.6 moles/L .40moles .250L

9. Suppose you had 58.44 grams of NaCl and you dissolved it in exactly 2.00 L of solution. What would be the molarity of the solution? Sample Problem:

10. M= 0.500 Answer:

11. Solution: Convert grams to moles.

12. Perform the standard formula.

13. quiz

14. Calculate the molarity of 25.0 grams of KBr dissolved in 750.0 mL . 80.0 grams of glucose (C 6 H 12 O 6 , mol. wt = 180. g/mol) is dissolved in enough water to make 1.00 L of solution. What is its molarity ?

15. Thank you!