You Have Three Sodium Carbonate Solutions on a Lab Table

question 14

Multiple Choice

You have three sodium carbonate solutions on a lab table in front of you. All of the solutions came from a 500.0-mL volumetric flask containing 3.00 M sodium carbonate. Solution 1 contains 100.0 mL of the 3.00 M solution.
Solution 2 contains 50.0 mL of the 3.00 M solution.
Solution 3 contains 10.0 mL of the 3.00 M solution.
What is the new concentration of Solution 2 if 13.2 g of solid sodium carbonate is added and dissolved? (Assume no volume change.)

• A) 2.49 M
• B) 11.5 M
• C) 1.72 M
• D) 5.49 M
• E) 0.549 M

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