O 11/14/2015 11:55 PM A 5.5/20 11/9/2015 03:15 PM Gradebook Print Acalculatat A

Question

O 11/14/2015 11:55 PM A 5.5/20 11/9/2015 03:15 PM Gradebook Print Acalculatat A eriodic Table Version Iva corbinii (continuousrelease Q powered by Sapling Learning ncorrect Map University Science Books eneral Chemistr presented by Sapling Lea Donald McQuarrie Peter A. Rock.Ethan Gallogly Consider this initial-rate data at a certain temperature NOBrlo nitial rate of formation for the reaction described by (M) of Br2 (M/s) 0.600 0792 102 2NOBr 0750 1.24 x 102 0.900 78 x 10 Determine the value and units of the rate constant. Number Units Mr 1. s 1 Previous O Next E S Give Up & View Solution Check Answer xit Hint The rate law will have this general form: rate NOBr

Explanation / Answer

rate = k[NOBr]^x

from the data given

(0.6/0.75)^n = (79.2/124)

n = 2.0

so that,

Rate = K[NOBr]^2

K = (0.792*10^2)/(0.6^2)

= 220 M-1.S-1

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