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Worksheets1.3 STOICHIOMETRY
Total questions: 9
Worksheet time: 39mins
Name
Class
Date
1.
What is the mole ratio in the following reaction:
2CO + O2 → 2CO2
a)
2:1:2
b)
1:1:1
c)
1:2:1
d)
Have no clue what a mole ratios is!!
2.
Using the following equation:
Fe2O3 + 3H2 → 2Fe + 3H2O
How many moles of iron (Fe) can be made from 6 moles H2?
a)
4 moles Fe
b)
6 moles Fe
c)
9 moles Fe
d)
2 moles Fe
3.
What is stoichiometry?
a)
The study of how the quantities of reactants and products are related in chemical reactions
b)
The study of the speed of reactions
c)
The study of how chemical reactions occur
d)
The study of types of reactions
4.
The first step in stoichiometry is to
a)
Determine a balanced equation
b)
convert grams to moles
c)
convert grams to liters
d)
use the mole ratio
5.
The substances listed on the right side of a chemical equation are the
a)
Yields
b)
Reactants
c)
Products
d)
Precipitates
6.
Use the equation 2 Al + 3 Cl2 ---> 2 AlCl3. If 2 moles of aluminum and 2 moles of chlorine are reacted, identify the limiting reactant.
a)
AlCl3
b)
Cl2
c)
Al
7.
2 KClO3 → 2 KCl + 3 O2
How many moles of oxygen are produced when 6.7 moles of KClO3 decompose completely?
How many moles of oxygen are produced when 6.7 moles of KClO3 decompose completely?
a)
6.7 mol
b)
1.0 mol
c)
10.1 mol
d)
4.5 mol
8.
What is a Excess Reagent?
a)
amount you end with
b)
what you run out of first
c)
what you have left over
d)
what you start with
9.
When does a chemical reaction stop?
a)
When the lab is finished
b)
When the excess reactant is used up
c)
When the limiting reactant is used up
d)
Chemical reactions never stop
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