Chemical Reaction Engineering
A chemical reaction, A → 3B, is conducted in a constant pressure vessel. Starting with pure A, the volume of the reaction mixture increases 3 times in 6 minutes. The fractional conversion is

Data insufficient, can't be predicted
1
0.5
0.33

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Chemical Reaction Engineering
For all positive reaction orders for a particular duty,

Density variation during reaction affects design
Reactor size is independent of the type of flow
Ratio of the volume of the mixed reactor to that of the plug-flow reactor decreases with order
Mixed reactor is always larger than the plug-flow reactor

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Chemical Reaction Engineering
For a tubular reactor with space time 'τ' and residence time 'θ', the following statement holds good.

τ and θ are always equal
τ = θ , for an isothermic tubular reactor in which the density of the process fluid is constant
τ = θ , for a non-isothermal reactor
τ = θ , when the fluid density changes in the reactor

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Chemical Reaction Engineering
Space velocity

Describes the extensive operating characteristics of a tubular flow reactor
Is a measure of the ease of the reaction
All of these
Is the maximum feed rate pre unit volume of reactor for a given conversion

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