Question: A distillation column is separating methane, ethane, propane, and butane. We pick methane and propane as the keys; thus, ethane is a sandwich component. a.

A distillation column is separating methane, ethane, propane, and butane. We pick methane and propane as the keys; thus, ethane is a sandwich component.

a. Show the approximate composition profiles for each of the four components. Label each curve.

b. Explain in detail the reasoning used to obtain the profile for ethane.

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