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.
After 0.1 mol of pure cis-2-butene is allowed to come to equilibrium with trans-2-butene in a closed 5.0-L flask at 25 °C, another 0.1 mol cis-2-butene is suddenly added to the flask.
(a) Is the new mixture at equilibrium? Explain why or why not.
(b) In the new mixture, immediately after addition of the cis-2-butene, which rate is faster: cis --> trans or trans --> cis? Or are both rates the same?
(c) After the second 0.1 mol cis-2-butene has been added and the system is at equilibrium, if the concentration of trans-2 butene is 0.01 mol/L, what is the concentration of cis-2-butene?
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