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The aqueous elementary reversible reaction Ak2k1 is conducted in batch reactor at 27C. If without R in the feed, it was observed that after 100min, the conversion of reactant A was 40%. When the conversion reached 90%, no change was observed anymore. Determine the volume of the plug flow reactor if the outflow of the product R was 0.20molR/min, feed stream was aqueous solution without R and concentration of reactant A at 0.4molA/L, flowrate at 1.0L/min and 27C