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Main Menu I contents I Grades I Course Contents Timer Notes Evaluate Feedback Print O Info ue in 7 hours, 36 minutes 3 homework point(s) Zeroth Order Reaction In a certain experiment the decomposition of hydrogen iodide on finely divided gold is zeroth order with respect to HI. Au (g) H2(g) 12(g) Rate -dDHIl/dt k 2.00x10-4 mol L 1 s If the experiment has an initial HI concentration of 0.490 mol/L what is the concentration of HI after 25.0 minutes? 1.90x10 1 mol/L 1 pts You are correct. Your receipt no. is 157-6817 Previous Tries How long will it take for all of the HI to decompose? 4.08x101 min You are correct. Your receipt no. is 157-7637 What is the rate of formation of H2 13.0 minutes after the reaction is initiated? .0002 moILA1 s'-1 1 pts Submit Answer Previous Unable to interpret units. Computer reads units as Tries 1/8 Tries "molL-1 s-1". 2016-05 22, 423 PM Page 1 of 2

Explanation / Answer

Then
Rate = -d[HI]/dt = k = 2.00×10-4 mol L-1 s-1 = 2*(d[H2]/dt)

2*(d[H2]/dt) = 2.00×10-4 mol L-1 s-1
d[H2]/dt = (2.00×10-4 mol L-1 s-1) = 1.0×10-4 mol L-1 s-1

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