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Section 3: Limiting Reactants

Limiting Reactants

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.
What mass of SrF2 can be prepared from the reaction of 8.05 g of Sr(OH)2 with 3.88 g of HF?
Sr(OH)2 + 2HF → SrF2 + 2H2O
A)11.7 g
B)12.2 g
C)10.5 g
D)8.32 g
3.
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
4.
In the chemical reaction below, 3.27 grams of Zn are reacted with 3.30 grams of HCl. Which component will limit the reaction?
Zn + 2HCl → ZnCl2 + H2
A)Zn
B)HCl
C)ZnCl2
D)H2
5.
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
6.
What is the maximum amount of Ca3(PO4)2 that can be prepared from 9.8 grams of Ca(OH)2 and 9.8 grams of H3PO4?
3Ca(OH)2 + 2H3PO4 → Ca3(PO4)2 + 6H2O
A)6.8 g
B)8.6 g
C)10.3 g
D)13 g
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