1
Chapter 3 Part 2
Quantitative Information from
Balanced Equations
Stoichiometry
•
Stoichiometry - quantitative relationships
between reactants and products.
–
Mole-Mole
–
Mass-Mass
•
Limiting Reagents (reactants)
•
Percent Yield
Use Balanced Equations
N
2
(g)
+
3H
2
(g)
→
2NH
3
(g)
1 molecule
3 molecules
2 molecules
Use Balanced Equations
N
2
(g)
+
3H
2
(g)
→
2NH
3
(g)
1 molecule
3 molecules
2 molecules
2 molecules
500 molecules
6.02x10
23
1 mole
0.4 mol
Mole Ratios
N
2
(g)
+
3H
2
(g)
→
2NH
3
(g)
1.
What is the relationship between NH
3
and H
2
?
2.
What is the mole ratio?
Mole Ratios
N
2
(g)
+
3H
2
(g)
→
2NH
3
(g)
1.
What is the relationship between NH
3
and H
2
?
2.
What is the mole ratio?
3.
If 1.2 mol H
2
reacts how much NH
3
will form?

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