The bromination of acetone in acidic solution produces a transient yellow species and has a half-life of about 8 ms at 25 °C. Which experimental technique is most likely to yield reliable concentration–time data for this reaction?
a) Conventional UV–visible spectrophotometry in a standard cuvette with manual mixing, recording absorbance every 2 s
b) Stopped-flow UV–visible spectrophotometry measuring absorbance changes in the first 50 ms
c) Manual titration of aliquots with standardized thiosulfate every 15 s
d) Computer-interfaced pH probe logging data every 1 ms