update - chem reaction rates lab-2

8/13/2019 UPDATE - Chem Reaction Rates Lab-2

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2/14/2013 Jennifer Lye, Sourabh Das, Katherine Chien Ms. Johnson

Which Factors Affect the Rates of Reaction the Most

2AgNO3 (aq)+ CuCl2 (aq)2AgCl(s)+ Cu(NO3)2 (aq)

Hypothesis:

1) Temperature: The increase of temperature will speed up the rate of reaction since themolecules have higher kinetic energy and thus will collide at a higher rate.

2) Concentration: A higher concentration means there are more molecules present to collide withthus there will be more collisions over a shorter period of time.

3) State: The addition of water to the copper chloride (going from a solid to an aqueous state) willallow for the copper and chloride ions to dissociate, therefore they will form new compounds

more easily and thus speed up the reaction.

AgNO3 CuCl2

C = 0.1 mol/L C = 0.1 mol/L AgNO3is the limiting reagent.

V = 10 mL v = 10 mL

N = 0.01 mol n = 0.01 mol

0.01 x = 0.005 mol 0.01 x 1/1 = 0.01 mol

Materials:

Part 1)

100 mL beaker Filter paper Hot plate 2 100 mL graduated cylinders Stop watch Goggles 100 mL of 0.1 mol/L AgNO3(aq) 30 mL of 0.1 mol/L CuCl2(aq) Thermometer Beaker mat

Part 2)

100 mL beaker Filter paper


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2/14/2013 Jennifer Lye, Sourabh Das, Katherine Chien Ms. Johnson

2 - 100mL graduated cylinders Stop watch Goggles 30 mL of 0.1mol/L AgNO3(aq) 10 mL of 0.1 mol/L CuCl2(aq) 10 mL of 0.2 mol/L CuCl2(aq) 10 mL of 0.15 mol/L CuCl2(aq)

Part 3)

100 mL beaker Filter paper 2 100 mL graduated cylinders Stop watch Goggles 30mL of 0.1mol/L AgNO3 (aq) 10 mL of 0.1 mol/L CuCl2(aq) 2 g of anhydrous CuCl2 (s) Scoopula

Procedure:

Part 1) - Temperature

1) Measure 10 mL of 0.10mol AgNO3solution into a test tube2) Measure 10 mL of 0.10mol CuCl2solution in a graduated cylinder and heat to 30C.3) Add the CuCl2solution into the test tube and let it react for 1 minute4) Filter the solution and measure the mass of precipitate (after it dries)5) Empty the beaker into the waste disposal unit and rinse6) Repeat step 1-5 for CuCl2at 405C and 60oC using the hot plate to heat the solution

Part 2) Concentration

1) Measure 10 mL of 0.10 mol AgNO3solution into a test tube2) Measure 10 mL of 0.10mol CuCl2solution in a graduated cylinder3) Add the CuCl2solution into the test tube and let it react for 1 minute4) Filter the solution and measure the mass of precipitate (after it dries)5) Empty the beaker into the waste disposal unit and rinse6) Repeat step 1-5 for 0.15 mol/L CuCl2and 0.20 mol/L CuCl2


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update - chem reaction rates lab-2

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