4-3: Stoichiometry
Chapter 4

Dr. Robert Belford & Rebekah Reinhart




Question 1
How many grams of CaO will react with 150.0g HCl? The unbalanced reaction is

(A)  194.9g
(B)  115.4g
(C)  150.0g
(D)  NOTA
 
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Question 2
What is the percent yield of CaCl2 if 76.1g of CaCl2 is formed for the reaction in question 1? The unbalanced reaction is

(A)  33.3%
(B)  76.1%
(C)  66.8%
(D)  NOTA
 
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Question 3
How many grams of HNO3 will react with 75.9g Fe2S3. The unbalanced reaction is

(A)  408g
(B)  68.0g
(C)  138g
(D)  NOTA
 
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Question 4
What is the percent yield of Fe(NO3)3 if 146g of Fe(NO3)3 is formed? The unbalanced reaction is

(A)  82.5%
(B)  41.3%
(C)  74.2%
(D)  NOTA
 

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Question 5
How many grams of H3PO4 will react with 175g of Ca(OH)2? The unbalanced equation is

(A)  51.3g
(B)  154g
(C)  347g
(D)  NOTA
 
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Question 6
What is the percent yield of Ca3(PO4)2 if 93g of Ca3(PO4)2 is formed? The unbalanced equation is

(A)  98.6%
(B)  76.2%
(C)  38.1%
(D)  NOTA
 

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