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Unformatted text preview: Diluting Concentration Solutions • Dilution - the number of moles of solute remains the same; only the vol is changed by adding more solvent. • M 1 V 1 = M 2 V 2 • What would the final concentration be if 25.0 ml of 12.0 M HCl was diluted to a final vol of 500 mL? Solution Stoichiometry • The molarity of a soln as a conversion factor in stoich calc. • How many mL of 0.025 M barium chloride are needed to react with 50 ml of 0.015 M sodium phosphate? How many grams of barium phosphate will be produced? • What vol of 12.0 M HCl is needed to react with 8.75 g of Zn? If the density of hydrogen gas is 0.0899 g/L, what vol of H 2 will be produced? 3 Titration • Procedure for determining the concentration of a soln. • Carefully measured vol of one solution reacts with a second soln of known conc and vol. • What is the M of Ba(OH) 2 if 38.4 mL of 0.215 M HCl is required to neutralize 20.0 mL of the Ba(OH) 2 soln?...
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