Chemical Reaction Engineering
In solid catalysed reactions the diffusional effects are more likely to affect the overall rate of reaction for

Slow reactions in catalyst of large pore diameter
Fast reactions in catalyst of small pore diameter
Slow reactions in catalyst of small pore diameter
Fast reaction in catalyst of large pore diameter

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Chemical Reaction Engineering
In a zero order reaction, reactants concentration does not change with time and the

Time for half change is independent of the initial concentration
Time for half change is half the time taken for completion of the reaction
Reaction rate is trebled when the initial concentration is trebled
Time for completion of the reaction is independent of the initial concentration

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