Question

What feature of a reaction would ensure that its rate would respond to a pressure jump?

Answer 1

If this is a gas... the incrase in pressure typically favour the LEAST mol formation

so...

for a reaction with less moles in the products than reactatns, expect an incras in rate due to equilibrium shifts

Also,

For small particulate matter; where solids beds are unsed, an incrase in pressure favour the active site binding

Other facts:

If reactions are favoured in liquid/solid state, then increase in pressure favours the liquid/solid phase, therefore, more reagent will be present, i.e. increase in rate