kı A+B AB* k2 k3 AB* +A FA2B k4 By applying pseudo steady state approximation to the sequence of elementary steps given above, a) Solve for the concentration of the active intermediate [AB*]. b) Derive the rate expression for the rate of A2B production. c) Under what conditions will the rate expression reduce to the following expression: k,k3[A]²[B] k2 + k3[A] TA2B

1. The kinetics of an enzyme-catalyzed reaction is described as r = (1+ aI)(K1 + S)* The following data were obtained in rate studies conducted in a well-mixed steady state continuous flow reactor using the same enzyme loading. S (mol/L) I (mol/L) r (mol/{L.min}) | 4.3 0.6 0.3 0.5 0.05 3.8 2.1 The experimental data should provide enough relations for the unknown kinetic parameters, rm, K1, and a (no need to use linear regression). Solve the relations to obtain the parameter values.

Problem IX (10 p): Consider the isomerization of compound A from its cis to its trans isomer at 298 K, which is first order in both directions: ki cis-A = trans-A k2 The rate constant for the forward reaction is k1 = 4.2 × 10* s', and the rate constant for the reverse reaction is k2 = 2.1 × 10-ª s-1. %3D a) Calculate the equilibrium concentrations [cis-A]eq and [trans-A]eq, assuming that at time t= 0 all of A was in the cis-form, i.e., [cis-A]o = [A]o. (Hint: Use the fact that at any time, [cis-A] + [trans-A] = [A]o.) %3D b) Which reaction is spontaneous, the forward reaction or the reverse reaction? Provide your reasoning. Total /100 p

​Little Johnny’s parents leave him alone with the babysitter while they go out for an amazing dinner at Ruan Thai ​restaurant in Wheaton, Maryland. While the babysitter listens to music by Between the Buried and Me and texts her ​friend, Johnny goes down to the basement and performs the thermite reaction that he read about—it was used to weld ​ railroad ties! How cool is that?! ​2 Al(s) + Fe2O3(s) à 2 Fe(s) + Al2O3(s) ​If he reacts 11.000 g aluminum with 19.000 g iron(III) oxide, will the iron he makes melt? (In other words, will the ​heat produced be sufficient to raise the temperature of the iron he makes to its melting point of 1537oC?) Assume that ​the ​iron absorbs only 60.0% of the heat produced. Assume the iron’s initial temperature is 17.22oC. The specific heat​of iron is 0.450 J/goC. Do you think Johnny will get in trouble? [Hint: Find the final temperature of the iron and ​compare to the melting point. Hint: The masses of both reactants are given. What…

14) The gas-phase catalytic reaction A + B + C is believed to have the following rate law. -r= k (KB PAPB - KCPC) Ks 1+ KBPB+ KCPC Propose a mechanism and rate limiting step that are consistent with the rate law above. Note: for full credit, you must prove that the mechanism and rate limiting step match the rate law. where did the negative come from? Molecular adsorption Mechanism: A*A* B+* B* Desorption this is written as an A*+B*→C+* YAD=KAM (PACK-CA*) VAD,B=KAB (PBC*- rs= Ks CA*CB* CB KB sts. adsorption

Suppose that the reaction 2A 2 3B k- is second-order in the forward direction and third-order in reverse. Derive an expression for the equilibrium constant in terms of the concentrations of A and B by equating the forward and reverse rates.

ot pt 1 pt 1 pt 1 pt 1 pt 1 pt 1 pt Z 40 what is the value of the rate constant? The decomposition of N₂O5 in CCl4 is a first-order reaction. If 1.47 mg of N₂O5 is present initially and 1.45 mg is present after 2.92 minutes at 55 °C, min-1 1 pt D Rate constant = Submit Answer W S Jull 3 X Alt E Try Another Version Q Search 14 с P % F 5 V FO 3 item attempts remaining G [References] SUS ZenBook as H N J S M Alt fuent Ctrl Home

could you show clearer steps and reasoning behind working for this question. working and answers included