Topical Questions
These questions are keyed to the major topics in the chapter. Usually a question that is answered at the back of this book is paired with a similar one that is not.
A cube of aluminum 1.0 cm on each edge is placed into 9-M NaOH(aq), and the rate at which H2 gas is given off is measured.
(a) By what factor will this reaction rate change if the aluminum cube is cut exactly in half and the two halves are placed in the solution? Assume that the reaction rate is proportional to the surface area, and that all of the surface of the aluminum is in contact with the NaOH(aq).
(b) If you had to speed up this reaction as much as you could without raising the temperature, what would you do to the aluminum?
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