Question

Caldand Commune V My VUDU - Sign in Connect Oakland Communit. Sign in to Student Login E) 0.50 M 10. Consider the following 24+ A rute HAP If the rate constant is 143 M u nd the initial concentration of Ais 0.0180 M, calculate the time for the rate of consumption of A to drop to 1.25 x 10-5ML A) 800 B) 1975 C) 2365 D) 1995 E) 99,0 s IL A first-order reaction has a cow of 26 Ir the initial concentration of reactant is 0.052 M how long will it take for the recente reach 0.0010 M A) 0074 B) 225 C) 00975 D) 0.033s 017 12. A compound docomposes with a life of 8.0 s and the half-life is independent of the concentration. How long does it take for the concentration to dess to one-sixteeth of its initial value A) 245 B) 325 C) 40 5 D110 E) 545

Answer 1

Answer:-

These questions are answered by using simple concept of chemical kinetics which involves the integrated rate law.

The answer is given in the image,

Answer ;- rate =K[A]? 1.25x10-5=1.43[A] CAJ2-8.74x10-6 CA), - 2.956X10-3M CA] = 0.0180M K=1 / LEAVE A +57.47 (2956410-3 0.0180) tahaz (338.231 – 55-556) t = 197.78 B) 1978 is correct answer. 11. K = 2657 (A70 -0.082,64% = 0.0010M - K=1 cha tože to 0.082 *-*.x4.4067 t=a.17s E) 0-175 is correct ansceler 12. 419 = 8.0 (Pistoles) 0.0010 (A). 2 CAIf= so, CAIE EK IS Deze =) je = ) het | t= mx 4 = 4x 80 = 329. B). 32s is correct answer