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An inlet water stream of 100 kg/h containing 0.015 wt fraction EtOH is stripped with a...

An inlet water stream of 100 kg/h containing 0.015 wt fraction EtOH is stripped with a pure oil stream of 160 kg/hr in a counter current stage tower. it is desired to reduce the exit water stream to 0.001 wt fraction EtOH. if the equilibrium relation is y=0.9x where y is the wt fraction EtOH in oil, determine the number of equilibrium stages required.

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