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Name: - Concentration and Stoichiometry Direction: Each of The Questions or Incomplete Statements Below Is Followed by A Set of Suggested Answers or

This document contains a concentration and stoichiometry worksheet with 10 multiple choice questions. It provides the names and molecular masses of various chemicals in different questions. It asks the student to calculate things like the grams of an acid needed for a reaction based on the balanced equation, the final volume of a solution made by dissolving a mass of solute, and the molarity of solutions. The student must select the best answer for each question from the multiple choices given.

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jazbutuyan1997
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44 views1 page

Name: - Concentration and Stoichiometry Direction: Each of The Questions or Incomplete Statements Below Is Followed by A Set of Suggested Answers or

This document contains a concentration and stoichiometry worksheet with 10 multiple choice questions. It provides the names and molecular masses of various chemicals in different questions. It asks the student to calculate things like the grams of an acid needed for a reaction based on the balanced equation, the final volume of a solution made by dissolving a mass of solute, and the molarity of solutions. The student must select the best answer for each question from the multiple choices given.

Uploaded by

jazbutuyan1997
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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Name:_____________________________________________

Concentration and Stoichiometry


Direction: Each of the questions or incomplete statements below is followed by a set of suggested answers or
completions. Select the best answer in each case and write the letter corresponding to it on the blank before each
item.
____1. A sample of pure lead (MM = 207 g/mol) weighing 0.500 g is dissolved in nitric acid (MMM = 63.0 g/mol),
according to the equation,
3 Pb (s) + 8 HNO3 = 3 Pb(NO3)2 + 4 H2O
How many grams of pure HNO3 are theoretically required?
A. 0.152
C. 0.408
E. none of the above
B. 0.816
D. 0.419
____2. How many grams of KBr (MM = 119.0 g/mol) are required to prepare 150 mL of 2 M solution?
A. 1.59
C. 35.7
E. none of the above
B. 17.8
D. 8.92
____3. A solution contains 3.30 g of Na2CO310 H2O (MM = 286 g/mol) in each 15.0 mL. What is the normality?
A. 1.00
C. 0.770
E. none of the above
B. 1.54
D. 0.143
____4. How many mL of water must be added to 5 mL of 12 M HCl solution to make a 3 M HCl solution?
A. 5
C. 20
E. none of the above
B. 15
D. 25
____5. To what volume of (mL) must 25.0 mL of HCl (sp. gr. 1.100) be diluted to in order to make a solution of HCl
with a sp. gr. of 1.040?
A. 28.6
C. 26.4
E. none of the above
B. 3.60
D. 1.40
____6. It is desired to make a 0.1 M solution by adding water to 5.000 g of CuSO45H2O (MM = 249.7 g/mol).
What is the final volume (mL) of the solution?
A. 100.5
C. 250.3
E. none of the above
B. 50.00
D. 200.2
____7. How many grams of K2SO4 (MM = 174.27 g/mol) are contained in 50.0 mL of 0.200 N solution?
A. 0.871
C. 0.581
E. none of the above
B. 1.74
D. 0.436
____8. In the reaction, 3 Pb (s) + 8 HNO3 = 3 Pb(NO3)2 + 4 H2O, how many grams of Pb(NO3)2 (MM = 331 g/mol)
could be obtained by evaporating the resulting solution to dryness?
A. 0.800
C. 0.890
E. none of the above
B. 0.313
D. 0.267
____9. What volume (mL) of 0.6380 M potassium hydroxide solution will neutralize 430.0 mL of 0.4000 M sulfuric
acid?
A. 269.6
C. 540.5
E. none of the above
B. 134.8
D. 539.2
____10. Calculate the approximate molarity (M) of a 13.0% (w/w) solution of H2SO4 (MM = 98.08 g/mol) with
specific gravity of 1.090.
A. 2.90
C. 1.44
E. none of the above
B. 2.43
D. 1.22

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