Question- How will temperature affect the rate of diffusion of NaOH into distilled water?

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Diffusion Lab                                                        Scotty Keller

Question- How will temperature affect the rate of diffusion of NaOH into distilled water?

Hypothesis- The higher the temperature the quicker the rate of diffusion because, according to Boyle’s law, the higher a substances temperature the faster the molecules move and thus the NaOH will hit the sides of the dialysis tubing more often and with more force allowing for more molecules to escape from the tubing.

Variables- The independent variable is the temperature of the water. The dependant variable is the change in the rate of diffusion. The controls are the amount of water, the amount of NaOH, the time allowed for diffusion to take place, the molarity of NaOH used, and the length of dialysis tubing used.

Materials-         6 ml of 1 M NaOH

                15 inches of dialysis tubing

                Three 250 ml beakers

                600 ml of distilled water

                1 pipette

                1 PH probe

                1 thermometer

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                Tape

String

                Permanent marker

                Ice

                Stove top

Procedure-         1. Mix 40 grams of NaOH into 1000 ml of water. This 1M solution of NaOH is to be used for the remainder of the procedure in place of NaOH.

2. Label the beakers with the tape and permanent marker. Then, fill the beakers. Label one beaker “room temperature” and fill it with 200 ml of water. Label the second beaker “hot”, then fill it with 200 ml of water and place it on the stove top. Label the third beaker “cold”, then fill it with water and ice up to ...

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