Read over the oscillating reaction Web Module. For the four reactions involving I– and IO–3:
(a) What factors influence the amplitude and frequency of the oscillation reaction? What causes these oscillations? (In other words: What makes this reaction different than others we have studied so far in Chapter 6?)
(b) Why do you think that the oscillations eventually cease (in the original experiment by Belousov, they lasted about 50 minutes)?
(c) A 10°C increase in temperature produced the following observations. The dimensionless times at which the oscillations began and ended decreased. The dimensionless period of the oscillation at the start of the oscillation increased while the dimensionless period near the end of the oscillation decreased. What conclusions can you draw about the reactions? Explain your reasoning. Feel free to use plots/sketches or equations if you wish.
(d) What if ... play around with the Living Example Polymath Program on the CD-ROM—what are the effects of changing the values of k0, ku, k1, and k2? Can you make the oscillations damped or unstable?
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