Which acid would be the best to combine with its sodium salt to make a solution buffered at pH 5.25? If you had 500.0 mL of a 0.10 M solution of the acid, what mass of the corresponding sodium salt of the conjugate base would you need to make the buffer?
Which acid would be the best to combine with its sodium salt to make a solution buffered at pH 5.25? If you had 500.0 mL of a 0.10 M solution of the acid, what mass of the corresponding sodium salt of the conjugate base would you need to make the buffer?
Chapter7: Statistical Data Treatment And Evaluation
Section: Chapter Questions
Problem 7.21QAP
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Question
Which acid would be the best to combine with its sodium salt to make a solution
buffered at pH 5.25? If you had 500.0 mL of a 0.10 M solution of the acid, what
mass of the corresponding sodium salt of the conjugate base would you need to
make the buffer?
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X A GENERAL CHEMISTRY 2 - GX
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(5) 5.00 g NaOH and 5.00 g x
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VII. PERFORMANCE TASK
Directions: Answer the following problems following Polya's Principle.
DUNNINGE
1. Which acid would be the best to combine with its sodium salt to make a solution
buffered at pH 5.25? If you had 500.0 mL of a 0.10 M solution of the acid, what
mass of the corresponding sodium salt of the conjugate base would you need to
make the buffer?
Acid
pKa
4.74
Acetic acid (HC2H3O2)
LAS_Ge
Carbonic acid (H2CO3)
6.36
7.21
Dihydrogen phosphate ion (H₂PO4)
Hydrogen carbonate ion (HCO3)
10.32
Principle 1 (1pt)
What is asked:
What are the given:
Principle 2 (2pts)
What will you use
to solve the
problem?
Principle 3 (4pts)
Carry out your plan
Principle 4 (3pts)
Do you think you
did it correctly?
Why do you think
so?
2. Is buffer more effective when the concentration of weak acid and conjugate base
are high? To answer this question, consider a generic buffer composed of HA and
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