Question

Be sure to answer all parts. Carbon disulfide, a poisonous, flammable liquid, is an excellent solvent for phosphorus, sulfur, and some other nonmetals. A kinetic study of its gaseous decomposition reveals these data: Experiment Initial (CS2] (mol/L) Initial Rate (mol/L's) 1 0.100 2.7 x 10-7 2 0.080 2.2 x 10-7 0.055 1.5 x 10-7 0.044 1.2 x 10-7 (a) Choose the rate law for the decomposition of CS2. Rate = Ok k[CS2] k[CS21 k[CSI (b) Calculate the average value of the rate constant. Enter your answer in scientific notation. * 10 (wclect) ,

Answer 1

candine to rate law, @ According to rate . from from 1. Rate a Cereja Rate zk{Csaja Where k=rate constant experiment 1, 2.7 x167= [o.ija -O enperiment 2, 2+2 x 157 = [0:08] " -@ divide by here the close 1.227 = (1-2832 Taking lag on bath sides, - Lag raat= a Lap (125) 010888 - à 0:0969 a=0.916 a~1. Rate = K[cse] CS Scanned wolence, CamScanner

from frem AT euperiment 1, Rate = ool= {& 7x10-73 a 6 euperincent 3, Rate = 0.055 = (1,3-X167)ą - divide o by @ em 1:818 = (16879 =) a=1 Hence, Rate = * [682] option and is correct [ k[csa}} It is verified by taking set Csaadusalt her! euperiment 1&2 co Scanned, with, & 3.

② Rate = *[Csa] from enperiment 1, 2.7x167 mot dt stak Cool med it). K-27 x 107 st CS Scanned with Scanned with CamScanner