You are directed to prepare 100 mL of a 500 mEq/L KOH standard. The primary standard used has a concentration of 0.400 Eq/L. When titrating your KOH solution, you discover that 4.0 mL of the primary standard reacted exactly with 5.0 mL of the KOH solution. a. What is the actual Eq/L concentration of the KOH solution? b. How many mEq are required to adjust the volume and concentration of the remaining 85 mL of KOH solution to 100 mL of a 500 mEq/L KOH solution? c. How many mL of 12 Eq/L KOH stock must be added in order to adjust the concentration of the KOH standard to 500 mEq/L?
You are directed to prepare 100 mL of a 500 mEq/L KOH standard. The primary standard used has a concentration of 0.400 Eq/L. When titrating your KOH solution, you discover that 4.0 mL of the primary standard reacted exactly with 5.0 mL of the KOH solution. a. What is the actual Eq/L concentration of the KOH solution? b. How many mEq are required to adjust the volume and concentration of the remaining 85 mL of KOH solution to 100 mL of a 500 mEq/L KOH solution? c. How many mL of 12 Eq/L KOH stock must be added in order to adjust the concentration of the KOH standard to 500 mEq/L?
Chapter9: Acids, Bases, And Salts
Section: Chapter Questions
Problem 9.101E
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You are directed to prepare 100 mL of a 500 mEq/L KOH standard. The
primary standard used has a concentration of 0.400 Eq/L. When titrating your
KOH solution, you discover that 4.0 mL of the primary standard reacted exactly with 5.0
mL of the KOH solution.
a. What is the actual Eq/L concentration of the KOH solution?
b. How many mEq are required to adjust the volume and concentration of the remaining
85 mL of KOH solution to 100 mL of a 500 mEq/L KOH solution?
c. How many mL of 12 Eq/L KOH stock must be added in order to adjust the concentration
of the KOH standard to 500 mEq/L?
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