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You have an assembly line with three people, each performing a specific task in sequence: addressing, inserting, and sealing/stamping envelopes. Show more…
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A reaction occurs via the following sequence of elementary steps. What is the rate law based on this reaction mechanism? 1st step: A + 2B → 2C + D slow 2nd step: C → E fast 3rd step: D → 2F fast rate = k [C] 2 [D] rate = k [A] [B]2 rate = k [C][D] rate = k [E] [F] 2 rate = k [A][B]
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The three step mechanism for the following reaction can be seen below 2 A + 2 B → C + 2 D Step 1: 2B + G → E Slow Step 2: E + A → D + F Fast Step 3: F + A → C + D + G Fast a) Are there any intermediates in the reaction mechanism for this reaction? If so what are they? b) Is there a catalyst in this reaction mechanism? If so what is it? c) Does this reaction mechanism have a rate determining step? If so which step is it?
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b) (1 mark) What is the rate law that describes the production of product E? This rate law can include concentrations of intermediates (do not try to manipulate the rate law further at this point). c) (2 marks) Write down an expression for the concentration of the intermediate in terms of reactant and/or product concentrations using the steady state approximation. d) (2 marks) Use your results from parts (b) and (c) to derive the general rate law of this reaction using the steady state approximation. Make no assumptions on which step is rate-limiting. e) (1 mark) An experimentally derived rate law for this reaction was found to be rate = k[A]. Based on this observation, would you expect Step 1 to be faster or slower than Step 2? Briefly explain your answer, using the rate law you derived in part (d).
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