(a) i) Use the steady-state approximation to derive the expression below for the rate of a...
(a) i) Use the steady-state approximation to derive the expression below for the rate of a free radical polymerisation,
–d[M]/dt = kp[M](kdf[I]/kt) ½
ii) Given kd = 1015.2, e ^–128 kJmol–1/RT s –1, and f = 0.7 for AIBN, kp = 107.906, e ^–35.70 kJ mol–1/RT M – 1 s –1 for butadiene, and the data below, what is kt for polymerisation of butadiene in this system?
[Butadiene] (M) [AIBN] (M) Rate (M s–1 ) T (°C)
0.85 1.59 x 10–2 9.37 x 10–3 60
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(a) i) Use the steady-state approximation to derive the
expression below for the rate of a...
6. Use the steady state approximation to derive a rate law for d[D/dt with the following...
6. Use the steady state approximation to derive a rate law for d[D/dt with the following mechanism A+B +C Step 1) Step 2) 7. a) What is the rate law for the mechanism in question (6) if the second step is the rate-limiting step? b) Express the activation energy for the overall reaction in terms of the activation energies for each step in the mechanism from part (a)
2.4 Using the steady state approximation derive the rate expression for the formation of C in the reaction 2A + B (g...
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6. Use the steady state approximation to derive a rate law for d[D/dt with the following mechanism A+B +C Step 1) Step 2) 7. a) What is the rate law for the mechanism in question (6) if the second step is the rate-limiting step? b) Express the activation energy for the overall reaction in terms of the activation energies for each step in the mechanism from part (a)
2.4 Using the steady state approximation derive the rate expression for the formation of C in the reaction 2A + B (g) → 2C(9) on the basis of the following proposed mechanism ki ZA K-1 X + B K2 20 To what expression does the rate expression reduce if the second reaction is slow, the initial equilibrium established very rapidly. (8)
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