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Unformatted text preview: (3) This reaction is monitored by polarimetry. The optical rotation is initially 18.0° and is -8.0°
when the reaction has gone to completion. Calculate the rotation (a) after one half-life, and
(b) after two half-lives; or indicate if you think there is insufficient information to determine these
quantities. 3. (6) The reaction is studied at 20.0°C and at 45.0°C. Suppose that the kH,20 and kH,45 values are
each uncertain by 8%, and their ratio is 4.5.
(a) Calculate the % uncertainty in their ratio; use this result to state this ratio and its uncertainty...
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