TMobile 1030 PM Chapter1 3ChandraCHEM1342Spring CONCENTRATIO

T-Mobile 10:30 PM Chapter1 3.Chandra.CHEM1342.Spring CONCENTRATION VS. TIME THE INTEGRATED RATE EQUATION How much of a 3.0 g sample of cyclopropane remains after 0.50 seconds? (k 9.2s1) CH CH CH H2C-CH2 ( 2 (g) A. 0.10 g B. 0.030g C. 1.0 g D. 3.0 g ZERO-ORDER REACTIONS Zero-order Reaction (RARE) Print open with

Solution

initial = Ao = 3.0 g

time = 0.5 sec

rate constant = 9.2 s-1 = k

for first order formula

k = 1/t * ln [Ao / At]

9.2 = 1/ 0.5 * ln (3.0 / At)

At = 0.0302 g

answer : B) 0.030 g