19.11 The phosphorescence of butyrophenone in acetonitrile is quenched by 1,3-pentadiene (P). The following quantum yields...
19.11 The phosphorescence of butyrophenone in acetonitrile is quenched by 1,3-pentadiene (P). The following quantum yields were measured at 25°C: [P/10-3 molL-1 0 1.0 2.0 0/do 1 0.61 0.43 Assuming that the quenching reaction is diffusion controlled and the rate constant has a value of 1010 L mol-'s-1, what is the lifetime of the triplet state?