Question: I'm not sure what formulas to use here, A bulk NMP of styrene is carried out at 125 C using styryl-TEMPO alkoxyamine as the mediator.

I'm not sure what formulas to use here,

A bulk NMP of styrene is carried out at 125 C using styryl-TEMPO alkoxyamine as the mediator. Please calculate:

(a) the concentration styryl-TEMPO alkoxyamine required to produce polystyrene with a number-average degree of polymerization of 100 at 60% conversion

(b) the time required for the polymerization to attain this conversion, taking into account the persistent-radical effect. The values at 125 C for the parameters required in the kinetics equations are: Rate coefficient for propagation, kp = 2500 L mol1 s 1 Rate coefficient for termination, kt = 1.6 108 L mol1 s 1 Equilibrium constant, KNMP = 2.5 1011 mol L -1 Density of styrene = 0.85 g cm3

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