Steady or Non-Steady? Understanding Reactor Dynamics in a Balanced System

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In the discussed scenario, a compound A is introduced into a reactor where it undergoes a reaction to form compound B. The key points revolve around the definitions of steady state versus non-steady state processes. Although the volumetric flow rates in and out of the reactor are equal, the concentrations of A entering and leaving the reactor differ. This discrepancy indicates that the system is not in a true steady state, as steady state requires that all properties, including concentration, remain constant over time at all spatial locations. Therefore, despite equal flow rates, the differing concentrations imply that the process is non-steady.
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Suppose I am putting a compound A in a reactor where the reaction A → B is occurring. If the concentration of A coming into the tank and leaving the tank are not changing (meaning, the value of C_a in is not the same as C_a out, but C_a out stays the same throughout) and the volumetric flow rate in and out is equal, is the process steady or non-steady?

Since the flow rate in and out are the same, I would think steady state, but since the concentration in is not the concentration out, does that imply non steady?
 
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Woopydalan said:
Suppose I am putting a compound A in a reactor where the reaction A → B is occurring. If the concentration of A coming into the tank and leaving the tank are not changing (meaning, the value of C_a in is not the same as C_a out, but C_a out stays the same throughout) and the volumetric flow rate in and out is equal, is the process steady or non-steady?

Since the flow rate in and out are the same, I would think steady state, but since the concentration in is not the concentration out, does that imply non steady?

Steady state means that nothing is changing with time at all arbitrary spatial locations.
 

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