Question

42 Kinetics Exercises A fictitious reaction: A(aq) B(aq) was started with an initial amount of 0.065 moles of A in 100mL of water. The following data were collected; 1. ILD Time (min) 0 10 20 30 40 Moles A 0.065 0.051 0.042 0.036 0.031 A) Calculate the moles of B at each time. Assume no B exists at time 0 0.1, 91M,.05 B) Calculate the average rate of disappearance of A in M/s Between T-10 and T-30 what is the average rate of appearance of B in M/s. assume volume is C) constant. Consider the reaction: O2 +2H2 2H;0 (all in gas phase) A) Determine the rate of oxygen consumption if water vapor appears at the rate of 0.60 mols/s. B) What is the rate of hydrogen consumption? 2. Photochemical smog forms when NO reacts with oxygen gas in the presence of ultraviolet light forming nitrogen dioxide. Rate data for this reaction follows: 3. Rate M/s [NO] 0021 0032 8.8x 105 1. 4.4x 10 1.8x 10 0016 .0021 2. 0016 0042 3. A) Write the balanced equation for the reaction. B) Determine the rate law for the reaction C) Determine the value of the rate constant with proper units. D) Determine the reaction rate when [NOJ=.0015M and [O,l- .0024M

kinetics problems, i have already done the problems on a separate peice of paper, just want to check answers before turning it in.thank you.

Answer 1

A Time (min) 2 (A) o65 oS Mole (A) o03 O o36 o.065 o 036 o.065 -OiOS o 065 MaleB) -o o42 OO o.014 0.023 0029 O.O34 sS n Concent ation er unit im Change (B) Rale Mole Volume n Litcu M Cancantratian X9

n Concent ion Per unit tim Changa (B) Ralc Mole Volume n Lito M Concentratan O.065 065 M T= O CA A+ oo A T lo , CA SI O.OSI OSIM o o T-20/ AJ OI042 looxi63 42 LA O.42 M Oo3 T-30 3 6 AJ CA O36M joa x3 3 OO31 O 31 M AJ CA loox o3 Rade A CA than AT -o 014 H o SI-o6S (014 o1009 lo o T-1o o1006 oo05 4 oo0 H O.42 o SI (Rade)20 2. o 0.0085 MA -o606 O 36 O.42 30-20 -Ve sih indücole - o005 M O 31 o.36 Cana ntratisn dro?e 4o-3 with tima

Cc) T- 3 o o 2 o mole O.ol4 o23 OO23 (onaahian O 29 M O23 M F0.14 M 4 O 23 (Rade T=lo to 2o 2 o 1 (Rade) 0 23-O.23 T- 20 to 30 30-20 (o.00J000 Avy. Rale 2.

2) 2 t2 H2 2 H2 O ,cO Veor Production -ve or (ensumpio 2 Y n2o o o mol fomation Given Wader Vapor tha n 2 mole/s 2 x Yo 2 X o 60 -Y2 2 (-Yo) 2.4 Msl 2 X1 12 mole / Ralc Con sum ption O) Rutc lon su m?hon 2 4

2 NO (A) >2NO2 (B) Ralc R02o0032 from dada ( Rade- Rade Prom data (2) Pnm dala(3) Rale R Eo.0021C0e 3 2] R CO1GO21JC Dol 6] Perlor m 8.8 h 2. R Co. 00 21 Cool] kCo.42Co.0016)* Perforn D 18x-4 Ooo 21 O 244 O 2444 ooo42 = 2.035 2 m - O 631 M 2 to ind data Rate cantard m 2 n R = 6.235X a.8x1 R (0021.0 31) O

6- 22S XN Rad c j, Lau Ret O2 Oo2 O.0015 Part 0) / than 0024) Rat6.23 Xx (o.015 3.33 X MA (4 (A Jn (Ca)s n() - k () (CA) 2.5 at - R x lo Jn(2. 5 In (2.05) O gi2 -lo R + a.7178 o778 O gi6 2 OoJ84 |k = o.01984, J(CA) -R (B 60 Decond at -(o.01384x6 +Jn(2.5) - o.274 O 7602 M exp -o.2741 CA

for Fir4 order betwee half ike ete conAtan i O 633 given 63. min O 63 O 693 OI03 min 63.4 min ordeと In (n) - R Ju (C.) 2 5 (0.003 3x2 5 Jn (a) Jn Ca In (CA.) -o 2732 O 27 325 O.27 325 expCo.2315 34 CA o.1608 CAa 3144 = 76.082 A XIoa A Somenin CAS