Question

A graduate student has collected the following data for the reaction of an organic pollutant with a naturally occurring mineral surface: Time (h) 1.5 Concentration (u M) 137 18 98.6 42.5 68 71.5 38.4 91.5 23.7 115 12.2 138.5 8.4 Determine the reaction order and a rate constant for this disappearance of this pollutant.

Answer 1

soli- Let reaction us write formula. the first order An 137 In At - okt (as a tral) In 198.61 = -0.3289:-K(18-1-5) 137 __KE 0.0199. In 168 Jarkt - -0.7 =-*(42.5-105) K = 0.017: In [38.44 = -1.2719-471.5-1.5)x -k 137) K = 0.018, la (237) - 0.0195 = K K = 0.0195. In 112.2 -0.021=k 1 1327 K = 0.02). In 18.4 = 0.02=k 1137 k=0.02 can see that 'k' is almost constant So, it it is first ordes reaction. 137 we