WorksheetsStoichiometry
Total questions: 13
Worksheet time: 2hrs 20mins
Name
Class
Date
1.
Which is the correct mole ratio of K3PO4 to KNO3 in the chemical reaction:
Mg(NO3)2 + K3PO4 → Mg3(PO4)2 + KNO3
Mg(NO3)2 + K3PO4 → Mg3(PO4)2 + KNO3
a)
1:1
b)
2:3
c)
1:3
d)
1:2
2.
For the Balanced Reaction: 3 Mg + 1 Fe2O3 → 3 MgO + 2 Fe; What is the Ratio of moles of MgO to moles Fe?
a)
3mol Mg / 2 mol Fe
b)
2 mol Mg/ 3 mol Fe
c)
1 mol Fe/ 2 mol Fe
d)
3 mol MgO / 2 mol Fe
3.
How many grams of bromine are required to react completely with 37.4 grams aluminum chloride?
AlCl3 + Br2 → AlBr3 + Cl2
AlCl3 + Br2 → AlBr3 + Cl2
a)
33.6 g
b)
134.5 g
c)
29.9 g
d)
67.2 g
4.
How many grams of water are produced when 2.50 mol oxygen reacts with hydrogen?
2 H2 + O2 → 2 H2O
2 H2 + O2 → 2 H2O
a)
0.277 g
b)
22.5 g
c)
45.0 g
d)
90.0 g
5.
How many grams of Fe3O4 are required to react completely with 300 grams of H2?
Fe3O4 + H2 → Fe +H2O
Fe3O4 + H2 → Fe +H2O
a)
2096 g
b)
1.54 g
c)
8597 g
d)
37.5 g
6.
Using the following equation:
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(l)
How many moles of iron can be made from 6 moles H2?
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(l)
How many moles of iron can be made from 6 moles H2?
a)
4 moles Fe
b)
6 moles Fe
c)
9 moles Fe
d)
2 moles Fe
7.
2 NaClO3 (s) --> 2NaCl (s) +3 O2 (g)
12.00 moles of NaClO3 will produce how many grams of O2?
12.00 moles of NaClO3 will produce how many grams of O2?
a)
256 g of O2
b)
576 g of O2
c)
288 g O2
8.
Cl2 + 2KBr → Br2 + 2KCl
How many grams of potassium chloride (KCl) can be produced from 356 g of potassium bromide (KBr)?
How many grams of potassium chloride (KCl) can be produced from 356 g of potassium bromide (KBr)?
a)
749 g
b)
223 g
c)
479 g
d)
814 g
9.
CH4 + 2 O2 → CO2 + 2 H2O
How many moles of carbon dioxide are produced from the combustion of 110 g of CH4?
How many moles of carbon dioxide are produced from the combustion of 110 g of CH4?
a)
13.7 mol
b)
2.75 mol
c)
6.11 mol
d)
6.85 mol
10.
How many moles are in 19.82 g Mg?
a)
1.226mol Mg
b)
481.7mol Mg
c)
1.000mol Mg
d)
0.82 mol Mg
11.
2CO + O2 −-> 2CO2
How many liters of carbon dioxide are produced from 10L of carbon monoxide?
How many liters of carbon dioxide are produced from 10L of carbon monoxide?
a)
10
b)
20
c)
1
d)
5
12.
How many liters of NH3 are needed to react completely with 30.0L of NO?
4NH3+6NO --> 5N2 + 6H2O
4NH3+6NO --> 5N2 + 6H2O
a)
5.0 L
b)
20.0 L
c)
7.5 L
d)
120.0 L
13.
What volume of hydrogen will be produced at STP by the reaction 67.3 g of magnesium with excfess water according to the following reaction?
1Mg + 2H2O --> Mg(OH)2 + H2
1Mg + 2H2O --> Mg(OH)2 + H2
a)
62L
b)
65L
c)
31L
d)
124L
100 %
