Embed Size (px)
Citation preview
Stoichiometry JeopardyStoichiometry JeopardyPerce
nt Yield
Limiting
Reactants
“Stoiched”
About Chemis
tryQ $100
Q $200
Q $300
Q $400
Q $500
Q $100
Q $200
Q $300
Q $400
Q $500
Q $100
Q $200
Q $300
Q $400
Q $500
Q $100
Q $200
Q $300
Q $400
Q $500
Q $100
Q $200
Q $300
Q $400
Q $500
Final Jeopardy
Grams
Moles
ToMolecules
$100 Grams<--> Moles
If you have 20.0g of magnesium sulfate, how many moles do
you have?
$100 Answer from Grams<--> Moles
0.17 mol MgSO4
$200 Grams<--> Moles
How many grams of aluminum oxide would
you have if you started with .109
moles?
$200 Answer from Grams<--> Moles
11.11g Al2O3
$300 Grams<--> Moles
What mass of Fe2O if you are have 2.5
moles of Fe2O?
$300 Answer from Grams<--> Moles
319.25 g Fe2O
$400 Grams<--> Moles
275 grams of sodium hydroxide is equal to
many moles?
$400 Answer from Grams<--> Moles
6.88 mol NaOH
$500 Grams<--> Moles
C4H10 burns in oxygen, the products are carbon dioxide
and water. What is themass of C4H10 when given
4.42 moles?
$500 Answer from Grams<--> Moles
256.98g C4H10
$100 to Molecules
How many atoms are in 3,250 g Pb?
$100 Answer from to Molecules
9.44x1024 atoms Pb
$200 Question from to Molecules
How many moles are in 3.011 x 1023 atoms
Mg?
$200 Answer from to Molecules
0.50 moles
$300 Question from to Molecules
How many molecules are there in 7.02 g
SiO2?
$300 Answer from to Molecules
7.03 x 10 22 molecules
$400 Question from to Molecules
What is the mass in grams of 3.011 x 1023
atoms F?
$400 Answer from to Molecules
9.50 g Fe
$500 Question from to Molecules
How many molecules is 320.0 grams of
C5H12?
$500 Answer from to Molecules
2.67 x 10 24 molecules C5H12
$100 Question from % Yield
Calculate the theoretical yield of Calcium Oxide if 24.8 grams of Calcium Carbonate decomposes. Calculate the percent yield if you got 13.1 grams in the laboratory.
CaCO3 → CaO + CO2
$100 Answer from % Yield
94%
$200 Question from % Yield
What is the percent yield if you experimentally produce 3.65 grams of copper when 1.87 grams of Aluminum reacts with 9.65 grams of Copper (II) Sulfate?
Al + CuSO4 → Cu + Al2(SO4)3
$200 Answer from % Yield
95%
$300 Question from % Yield
There are 100.0 grams of each reactant available. Determine the limiting reactant in
this equation.
SO2 + 2NaOH → Na2SO3 + H2O
$300 Answer from % Yield
LR=NaOH
$400 Question from % Yield
Find the theoretical yield of silicon carbide if 50.0 grams of silicon
dioxide reacts with 79.1 grams of Carbon.
SiO2 + C → SiC + CO
$400 Answer from % Yield
33.3g SiC
$500 Question from % Yield
What is the percent yield if 155 grams of calcium carbonate is treated with 250
grams of hydrochloric acid and 142 grams of calcium chloride is actually obtained?
CaCO3 + HCl → CaCl2 + CO2 + H2O
$500 Answer from % Yield
56.6%
$100 Question from Limiting Reactants
If 10.4 moles of hydrogen, H2, and 9.1 moles of oxygen, O2, react. How many moles of water, H2O, would be produced by the reaction?
2 H2 + O2 2 H2O
$100 Answer from Limiting Reactants
10.4 mol H2O
$200 Question from Limiting Reactants
If 83.7 grams of aluminum, Al, and 195.2 grams of sulfur, S, are put into a
container and allowed to react according to the above equation, which substance(s) and how many grams of each would be present in the container
after the reaction is complete?
2 Al + 3 S Al2S3
$200 Answer from Limiting Reactants
LR= Al
$300 Question from Limiting reacatants
If 609.5 grams of vanadium (II) oxide, VO, and 832 grams of iron (III) oxide, Fe2O3, are put into a container and allowed to react
according to the equation above, which substance(s) and how many grams of FeO would be present in the container after the
reaction is complete? 2 VO + 3 Fe2O3 6 FeO + V2O5
$300 Answer from Limiting Reactants
748.6g FeO
$400 Question from Limiting Reactants
CO(g) + 2 H2(g) CH3OH(l)
A mixture of 1.20 g H2 and 7.45g CO are allowed to react.
Which reagent is the limiting reagent?
$400 Answer from Limiting Reactants
CO
$500 Question from Limiting Reactants
A welder has 20.0 moles of acetylene gas (C2H2) and 10.0 moles of oxygen gas (O2). They
combine to form water and carbon dioxide.
How many moles of carbon dioxidegas (CO2) will form?
$500 Answer from Limiting Reactants
O2 yields 8.0 mol CO2
$100 Question from “Stoiched” About Chemistry
0.300 moles of bromine gas (Br2) and 0.500 moles of chlorine gas (Cl2)
react to form tribromine monochloride (Br3Cl). How many moles of this product will form?
$100 Answer from “Stoiched” About Chemistry
0.2 mol Br3Cl
$200 Question from “Stoiched” About Chemistry
Determine the % yield when 7.80 grams of benzene (C6H6)
burns in oxygen gas to form 3.00 grams of CO2 gas and
water vapor.
$200 Answer from “Stoiched” About Chemistry
11.5%
$300 Question from “Stoiched” About Chemistry
25.3 g of magnesium reacts with 44.3 g of copper (II) nitrate to form
copper and magnesium nitrate.What mass of copper will form?
$300 Answer from “Stoiched” About Chemistry
16.Og Cu will form
$400 Question from “Stoiched” About Chemistry
2 NH3 + 2 O2 N2O + 3 H2OIf 80.0 grams of O2 are reacted in the
above reaction, how many grams of N2O will be produced?
$400 Answer from “Stoiched” About Chemistry
55.2g N2O
$500 Question from “Stoiched” About Chemistry
CO (g) + 2 H2 (g) CH3OH (l)
A mixture of 1.20 g H2 and 7.45 g CO
are allowed to react.Suppose the actual yield is 7.52 g of
CH3OH. What is the % yield?
$500 Answer from “Stoiched” About Chemistry
88.26 %
Final Jeopardy Question
Silicon nitride (Si3N4), a ceramic, is made by the direct combination of silicon and
nitrogen at high temperature. How much silicon must react with excess nitrogen to
prepare 125 grams of silicon nitride?
Final Jeopardy Answer
75.07g Si
