EXERCISES, LESSON 7
INSTRUCTIONS: Answer the following exercises by writing the answer in the space
provided at the end of the question.
After you have completed all the exercises, turn to "Solutions to Exercises" at the
end of the lesson and check your answers. For each exercise answered incorrectly,
reread the material referenced with the solution.
A 100 mEq/L mercuric solution was used in a chloride determination. The assay
required 4.0 mL of the specimen, whose concentration was determined to be
0.090 Eq/L. What volume of mercuric solution was used?
How much 0.50 Eq/L HCl is required to titrate 4.0 mL of a 0.75 mol/L
7.0 mL of a 3.65 g/dL HCl was used to titrate 5.0 mL of Ca(OH)2. What is the
mol/L concentration of the base?
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?