Setting up the Experiment |
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Obtain two 50 mL Erlenmeyer flasks and a distillation tube.Your TA will come around to pass out the Pop Rocks™ samples. You should receive one package of Pop Rocks™. |
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Place one of the 50 mL Erlenmeyer flasks on the balance after it has been cleaned and dried. |
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Tare the balance. |
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Pour the entire Pop Rocks™ sample into the flask. Record the mass of the candy to the nearest hundredth of a gram. |
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Into the other 50mL Erlenmeyer flask, introduce 30.0 mL of 0.1 M NaOH (standardized) using a graduated cylinder. |
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Set up the distillation-type apparatus as shown. The flask containing Pop Rocks™ should sit on top of a wire gauze pad above a Bunsen burner. The flask containing the NaOH, the receiving flask, should rest inside of a 400 mL beaker. The two will be connected by the distillation tube. The 400 mL beaker should be filled with ice so the receiving flask is completely covered. The distillation tube should be immersed in the NaOH solution, so the gas bubbles entering the receiving flask will be introduced into the solution, not the air above the solution. You may ask your TA to check your setup before you begin if you desire. |
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