Exercise 14.25 ) 100f3 Part B Consider the following reaction 2HBr(g) H2(g) + Br

Question

Exercise 14.25 ) 100f3 Part B Consider the following reaction 2HBr(g) H2(g) + Br2(g) In the first 21.0 s of this reaction, the concentration of HBr dropped from 0.550 M to 0.501 M Calculate average rate of the reaction in this time interval. Express your answer using two significant figures Rate M s-1 Submit Request Answer Part C If the volume of the reaction vessel in part (b) was 1.50 L, what amount of Bre (in moles) was the first 15.0 s of the reaction? formed during Express your answer using two significant figures. 051 PM 3//2018

Explanation / Answer

Part B

rate = 1/2 {(0.550 - 0.501)/21.0 }

= 1/2 {0.0023}

=0.0016 M s-1

Part C

Amount of Br2 formed after 15 s = rate * time

= 0.0016 *15.0

=0.024 M

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