AAMC Chemistry Exam Practice Questions and Answers
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Course
AAMC
Institution
AAMC
AAMC Chemistry Exam Practice
Questions and Answers
Consider the reaction rate described by the following equation.
Rate = k[A]m[B]n
The overall reaction is said to be second order when:
A. k is constant, m=0, and n=0.
B. k is constant, m=1, and n=1.
C. k is constant, m=2, and n=2.
D. k=2, a...
D. pKa of HIn. - ANSWER✔✔-Answer Key: D The indicator will change color over a specific pH range. The
range at which the color change takes place depends on the point at which HIn is converted to In-, and
this depends on the pKaof the indicator which is answer D.
Approximately how many moles of Al3+ are reduced when 0.1 faraday of charge passes through a cell
during the production of Al? (Note: Assume there is excess Al3+ available and that Al3+ is reduced to Al
metal only.)
A. 0.033 mol
B. 0.050 mol
C. 0.067 mol
D. 0.10 mol - ANSWER✔✔-Answer Key: A
A faraday is equal to one mole of electric charge. Because each aluminum ion gains 3 electrons, 0.1
faraday of charge will reduce 0.1/3 moles of aluminum, or 0.033 moles of aluminum.
The following reaction occurs spontaneously.Cd(s) + 2 H+(aq) → Cd2+(aq) + H2(g) Which of the following
has the highest electron affinity?
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