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Unformatted text preview: (0.75 M)(250 mL) = M 2 (295 mL) M 2 = (0.75 M)(250 mL) = 0.64 M (295 mL) 2) If water is added to 175 mL of a 0.45 M KOH solution until the volume is 250 mL, what will the molarity of the diluted solution be? (0.45 M)(175 mL) = M 2 (250 mL) M 2 = (0.45 M)(175 mL) = 0.32 M (250 mL) 3) How much 0.075 M NaCl solution can be made by diluting 450 mL of 9.0 M NaCl? (9.0 M)(450 mL) = (0.075 M)V 2 V 2 = (9.0 M)(450 mL) = 54,000 mL = 54 L (0.075 M) 4) If 550 mL of a 3.50 M KCl solution are set aside and allowed to evaporate until the volume of the solution is 275 mL, what will the molarity of the solution be? (3.50 M)(550 mL) = M 2 (275 mL) M 2 = (3.50 M)(550 mL) = 7.0 M (275 mL) 5) How much water would need to be added to 750 mL of a 2.8 M HCl solution to make a 1.0 M solution? (2.8 M)(750 mL) = (1.0 M)V 2 V 2 = (2.8 M)(750 mL) = 2100 mL (1.0 M) 2100 mL – 750 mL = 1350 mL = 1.4 L...
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This note was uploaded on 10/04/2010 for the course CHEM 145 taught by Professor Prezhdo during the Fall '08 term at University of Washington.
 Fall '08
 PREZHDO
 Chemistry, Molarity

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