Green Packet &
Yellow Rubric out!
Ask your partner, “what did you do this weekend?”
Extra Credit Opportunity
• Make a chemistry valentine!
• Due anytime before break!
Warm up
Complete F-G equations on the front of the green packet,
read the procedure for F-G.
Part F:
Cu3(PO4)2(s) + 3H2SO4(aq)  3CuSO4(aq) + 2H3PO4(aq)
Part G:
CuSO4(aq) + Zn(s)  ZnSO4(aq) + Cu(s)
Learning Targets
• I can write and balance equations for the copper series reactions.
• I can calculate the amount of a product I should get using stoichiometry.
• I can carry out a lab procedure with accuracy and record measurements using
correct sig figs.
• I can determine a limiting reactant and percent yield.
The Copper Lab
• You will do a series of 7 reactions to convert:
Solid copper
Cupric nitrate
At the end we
will calculate %
error (how
much Cu you
lost!)
Cupric sulfate
Cupric
hydroxide
Cupric oxide
Cupric
phosphate
Cupric
chloride
Schedule-Blue
• Monday, 2/1: Complete Parts A-C of the procedure (including taking pictures), write
balanced equations, complete green sheet
• Wednesday, 2/3: Complete Parts D-E (procedure, equations, green packet); Start
PowerPoint
• Friday, 2/5: Complete Parts F-G (procedure, equations, green packet)
• Tuesday, 2/9: Final weigh-in. Packet/PPT work time. Stoichiometry “Quest”
• Thursday, 2/11: All Copper Series Lab handouts and PowerPoint due,
Schedule-Gold
• Tuesday, 2/2: Complete Parts A-C of the procedure (including taking pictures), write
balanced equations, complete green sheet
• Thursday, 2/4: Complete Parts D-E (procedure, equations, green packet); Start
PowerPoint
• Monday, 2/8: Complete Parts F-G (procedure, equations, green packet)
• Wednesday, 2/10: Final weigh-in. Packet/PPT work time. Stoichiometry “Quest”
• Friday, 2/12: All Copper Series Lab handouts and PowerPoint due,
Today’s Tasks
Remember we always want Copper to be the limiting reagent!
• Complete Parts F and G
• Weigh your clean dry filter paper first!!!
• Record this labeled measurement on the bottom of the
procedure!
• Find your dried sample by the fume hood
• Wear goggles and be careful with the H2SO4!
• Work on your group PowerPoint on gotahoma/google docs
• I will give you your results next time after you do your final weigh-in! 
PowerPoint Work Time
• Read the yellow rubric (especially the 100% column) and use it as
a checklist
• Make a Google presentation using your Gotahoma account
• Here’s what success looks like: (next slide)
Cu + 4HNO3 Cu(NO3)2 +2NO2 + 2H2O(l)
(s)
(aq)
(aq)
(g)
Reaction A
Nitrogen Dioxide
Reaction:
The solid copper is
becoming blue
aqueous cupric
nitrate and a brown
gas (NO2) is being
released.
Oxidation-Reduction
Reaction
Driving Forces:
Transfer of electrons,
formation of gas,
formation of water.
Riley gets a better view: making sure
her measurements for deionized
water are accurate.
Connection: Smog
above a city
Next Reaction
Copper
Shavings
Cu(NO3)2(aq)
Watch The Video
Stoichiometry Quiz Next Class
Homework:
 Stoichiometry Worksheet (review for our quiz next class)
 Post-lab for parts F-G
 Work on PowerPoint
Lim. Reactants and Percent Yield
Ex: Sodium sulfate and water are created when 50 g of NaOH and 75 g of H2SO4 are
mixed. Calculate the percent yield if only 25 g of sodium sulfate are made.
Steps:
1. Write and balance equation
2. Calculate how much Na2SO4 can be made with 50 g NaOH
3. Calculate how much Na2SO4 can be made with 75 g of H2SO4
The lower # from 2 and 3 is how much Na2SO4 you can make
1. Percent yield = actual yield (25g)/theoretical yield (answer from #4) x 100
How much did I actually get/How much should I have gotten?
Answers
1. H2SO4 (aq) + 2NaOH (aq)  Na2SO4 (aq) + 2H2O (aq)
2. (50g/39.07/2*140.15)=89.6787 90. g of Na2SO4
3. (75/98.09*140.15)=107.159 110 g of Na2SO4
NaOH is the limiting reagent so I can only make 90. grams of Na2SO4
4.
25 g / 90 g = 27.77777…  28 % yield