Ch. 3 & 7 – The Mole II. Molarity (p. 412-415).

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Ch. 3 & 7 – The Mole II. Molarity (p. 412-415)

substance being dissolved A. Molarity Concentration of a solution. substance being dissolved total combined volume

A. Molarity 2M HCl What does this mean?

B. Molarity Calculations 6.02  1023 (particles/mol) molar mass (g/mol) MASS IN GRAMS MOLES NUMBER OF PARTICLES LITERS SOLUTION Molarity (mol/L)

B. Molarity Calculations How many grams of NaCl are required to make 0.500L of 0.25M NaCl? 0.500 L 0.25 mol 1 L 58.44 g 1 mol = 7.3 g NaCl

B. Molarity Calculations Find the molarity of a 250 mL solution containing 10.0 g of NaF. 10.0 g 1 mol 41.99 g = 0.238 mol NaF 0.238 mol 0.25 L M = = 0.95M NaF