List of top Process Calculations and Thermodynamics Questions on Recycle, bypass and purge: processes, calculations

Cyclohexane (C₆H₁₂) is produced from benzene (C₆H₆) and hydrogen (H₂) according to the following reaction.
\[ C_6H_6 + 3H_2 \rightarrow C_6H_{12} \]
Consider the process flow diagram shown in the figure.

In this process, the overall and single-pass conversions are 90% and 25%, respectively. The recycle stream contains 25 mol% C₆H₆ and 75 mol% H₂. If the fresh feed contains 25% excess H₂, at steady state, the ratio of the molar flow rate of the recycle stream to that of the fresh feed is ______ (rounded off to one decimal place).