Experimental Investigations ❮ 301- You have an aqueous solution of sugar. The
simplest method to separate the sugar from the
solution is to:
(A) evaporate the solution to dryness
(B) centrifuge the solution
(C) filter the solution
(D) electrolyze the solution - A chemistry student adds 25.0 g of sodium
hydroxide, NaOH, to 500.0 g of water. Which
of the following procedures should he employ to
determine the molarity of the solution?
(A) He should convert the grams of NaOH to
moles and measure the volume of the solution.
(B) He should titrate the solution with standard
potassium hydroxide solution.
(C) He should determine the freezing point of
the solution.
(D) He should determine the vapor pressure of
the solution at room temperature. - A chemistry student prepares a solution of an
unknown solid with a molar mass of 78.3 g/mol.
She prepares the solution by dissolving 2.50 g
of the unknown substance in 100.0 g of water.
Which of the following procedures could she use
to determine whether the unknown substance is
an electrolyte?
(A) She could measure the specific heat of the
solution.
(B) She could measure the volume of the solu-
tion.
(C) She could measure the freezing point of the
solution.
(D) She could determine the specific heat of the
solution.
4. A chemist makes a solution by dissolving 10 g of
urea in 100 g of water. What additional infor-
mation does she need to calculate the molarity of
this solution?
(A) She needs the density of the solution and the
molar mass of urea.
(B) She needs the density of urea and the molar
mass of urea.
(C) She needs the density of water and the den-
sity of the solution.
(D) She needs the molar mass of urea and the
density of water.
5. A certain reaction follows the rate law Rate = k
[Br-] [BrO 3 - ] [H+]^2. What are the units of the
rate constant, k?
(A) s-^1 M-^3
(B) M s-^1
(C) M^3 s
(D) M s
❯ Review Questions
Use these questions to review the content of this chapter and practice for the AP Chemistry
exam. First are 10 multiple-choice questions similar to what you will encounter in Section I
of the AP Chemistry exam. Following those is a long free-response question like the ones
in Section II of the exam. To make these questions an even more authentic practice for the
actual exam, time yourself following the instructions provided.Multiple-Choice Questions
Answer the following questions in 15 minutes. You may not use a calculator. You may use
the periodic table and the equation sheet at the back of this book.