anonymous one year ago Help with diffusion

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1. anonymous

The following reaction is taking place: $2 H_2 S + SO_2 \rightarrow 0.5 S_6 + 2 H_2 O$ I need to use the value of SO2 at the catalyst surface (i.e. perform bulk diffusion calculations), but I a having a hard time with that. Could someone please point me in the right direction?

2. anonymous

I have the bulk concentration (and partial pressures) values

3. anonymous

I also have values for D_AB and D_mix for all A and B