Types of Reactions Lab
During this lab, you will experiment with different types of reactions. At the end of this lab, you will be able to:
1) Determine what type of reaction has taken place
2) Calculate how many grams and moles of reactants and products you have.
During the lab, you will be measuring the amount of products and the amount of reactants for each reaction.
Then you will then create a full lab report that focuses on the following problem:
Proper identification of type of reaction occurring
If a reaction is observed and the mass of the reactants and products is measured,
the correct amount of products will be produced based on the ratio of the coefficients
in the balanced reaction.
This lab will be spit up into two days:
Day 1:
Part A - _____________________ Reaction
Zinc + Copper (II) sulfate solution → Copper + Zinc Sulfate solution
Part B - _______________________ Reaction
Magnesium + Oxygen → Magnesium Oxide
Day 2:
Part C: - _______________________ Reaction
Copper (II) sulfate β Pentahydrate → water + copper (II) sulfate
Part D: - _______________________ Reaction
Copper (III) sulfate solution + Sodium carbonate → Copper (III) carbonate + Sodium Sulfate
Part E: - ________________________ Reaction
Paraffin Wax + Oxygen → Carbon dioxide + Water
Paraffin Wax is πΆ31 π»64
Required Equipment and Supplies
goggles, gloves, and apron (if desired)
balance (0.01g) and
beakers, 50 mL, 250 mL, 400 mL
cylinder, graduated, 10 mL, 25 mL, 100 mL
glass stirring rod
filter paper (or bleached white coffee filters)
filter
Droppers
Crucible
Bunsen Burner
tongs
wire gauze
CAUTION
Copper sulfate is moderately toxic. Handle the hot liquids used in this experiment with extreme care. Use
extreme care, avoid open flames, and have a fire extinguisher handy. Wear goggles, gloves, and protective
clothing.
Day 1:
First, identify the types of reactions that you will be performing and write a balance chemical equation:
Part A:
Part B:
You will be doing each reaction independently.
Part A:
Procedure
1. Place 50 mL beaker on balance and zero the balance. Add 1.00 g (approximately) of Zinc powder.
Record the mass of the Zn.
2. Repeat process two more times. You should have three 50 mL beakers with 1.00 g of Zinc powder in
each.
3. Obtain approximately 10 mL of Copper (II) sulfate solution from the dispensing area in a 25 mL
graduated cylinder.
4. Add three pipette fulls of Copper (II) sulfate solution to each of the three 50 mL beakers that contain the
Zinc.
a. Add one pipette full at a time and swirl mixture for adequate mixing.
5. Record your observations of the reaction.
6. Set all three beakers aside to allow the reaction to run to completion. Swirl occasionally. Perform Part B
and then move on to step 7.
7. Place fluted filter paper over a filter and set the filter in a separate 250 mL beaker.
8. Take one of the 50 mL beakers that contain Part A reaction and pour contents into filter.
a. Identify solid that is left in the filter.
9. Flush beaker with water to ensure all contents enter the filter.
10. Repeat the process twice for the two other 50-mL beakers.
11. Placed filtered material in designated area and leave overnight. Record the weight of the DRIED filter.
Part B:
Procedure:
1. Obtain about 1 Magnesium strip from the dispensing area. Record the weight.
a. Crucible__________________.
b. Magnesium Ribbon __________________.
2. Coil the magnesium ribbon leaving room for oxygen to bond.
3. Place the ribbon inside the crucible touching the bottom.
4. Carefully place the crucible on a pre-tightened clamp. Ensure that the crucible will not fall off the stand.
5. Position the crucible directly over the Bunsen burner and start heating strongly.
6. DO NOT look directly at the Magnesium when it initially reacts. The initial glow can burn your retinas.
After the initial glow, record your observations of Magnesium reacting and post-reaction Magnesium.
7. When the reaction is complete, remove from heat and place on wire gauze.
8. Allow the crucible to cool down completely for 5 minutes.
9. Record the weight__________________.
Day 2:
First, identify the types of reactions that you will be performing and balance them:
Part C:
Part D:
Part E:
You will be doing each reaction independently.
Part C:
Procedure
1. Obtain 2 grams of hydrated copper sulfate salt πΆπ’ππ4 β 5π»2 π (Blue Crystals) from the dispensing area.
Record the exact weight in grams.
2. Weigh an empty test tube
3. Transfer amount into a test tube.
4. While holding test tube with test tube tongs, strongly heat the substance over a Bunsen burner at an
angle with the open end of the test tube facing away from your face and away from other students.
(Hold tongs with a pot holder so you don’t burn your hand)
5. Observe the reaction and record the observations.
6. Allow products and test tube to cool. Weigh the test tube and record the weight of product left over in
the test tube.
Part D:
Procedure:
1. Obtain 25 mL of the πΆπ’ππ4 solution and 25 mL of the πππΆπ3 solution.
2. Combine the two into a 400 mL beaker and stir with a glass rod. A reaction will take place. Observe the
reaction and record those observations.
3. A blue gel precipitate will form.
a. Identify the precipitate (solid)
Part C:
Procedure:
1. Place a candle upright on the center of a foil-covered watch glass.
2. Carefully lower a beaker over the lighted candle.
3. Observe and record until no more changes are evident
4. Light a splint, carefully life one edge of the beaker and insert the lighted end into the beaker next to the
candle. Record your observations.
a. This will be the lab skill I test. Everyone should practice this skill.
Lab Report
Design:
Include an introduction to the lab. Answer the following question: Why are you completing the lab?
Include the procedures (you may copy and paste but make changes as needed)
Include the goal of each part (A, B, C, D, and E)
Data:
We will discuss data in class.
Part B, D and E will be observational data.
Part A and C will be analysis of weights of reactants and products.
Compare to given quantities (what you should have gotten)
Conclusion:
Analysis of Part B, C and E. What confirms the type of reaction you identified?
Analysis of Part A
Did your results match the given quantities?
If they do, are they exact? Are there variations? What does the standard deviation tell you
about your lab technique? What do your results tell you about the accuracy and precision of
your lab technique? How could you improve your process to get more accurate/precise results?
Analysis of Part C
Did your results match the given quantities? If they do, are they exact? Are there variations?
What does the standard deviation tell you about your lab technique? What do your results tell
you about the accuracy and precision of your lab technique? How could you improve your
process to get more accurate/precise results?
Your lab will be submitted on Turn It In .Com. Late Labs will have 10% deducted from the final score. Complete
sentences will be used. I recommend (but am not requiring) that you take your lab to the scribe so they can look
at your wording, sentence structure, correct noun-verb agreement, not using pronouns, spelling and general
formatting help.
This will be due : __________________________
0
