Chemistry: Matter and Change

Section 3: Limiting Reactants

Self Check Quizzes

1
The substance that limits the extent of a chemical reaction has a special name. What is this substance called?
A)limiting reactant
B)limiting product
C)excess reactant
D)excess product
2
How many moles of HCl will just react with 0.424 g Ba(OH)2?

2HCl + Ba(OH)2 → BaCl2 + 2H2O
A)4.94 x 10-3 mol
B)9.90 x 10-3 mol
C)2.48 x 10-3 mol
D)1.24 x10-3 mol
3
Which reactant in the following reaction is in excess when 9.8 grams of Ca(OH)2 is reacted with 9.8 grams of H3PO4?

3Ca(OH)2 + 2H3PO4 → Ca3(PO4)2 + 6H2O
A)Ca(OH)2
B)H3PO4
C)Ca3(PO4)2
D)H2O
4
In a bunsen burner flame, what does a yellow color signify?

CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)
A)Methane gas is the limiting reactant
B)Oxygen is the limiting reactant.
C)Carbon dioxide is the limiting reactant.
D)Water is the limiting reactant.
5
What is the limiting reactant in the reaction shown?

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A)ammonia
B)nitrogen
C)hydrogen
D)There is no limiting reactant.
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