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We are absorbing hydrogen sulfide at 15°C into water. The entering water is pure. The feed...

We are absorbing hydrogen sulfide at 15°C into water. The entering water is pure. The feed gas contains 0.0012 mole frac hydrogen sulfide and we want to remove 97% of this in the water. The total gas flow rate is 10 kmol/h. The total liquid flow rate is 2000 kmol/h. Total pressure is 2.5 atm. You can assume that total liquid and gas flow rates are constant. Equilibrium data are in Table 12-1. a. Calculate the outlet gas and liquid mole fracs of hydrogen sulfide. b. Calculate the number of equilibrium stages required using a McCabe-Thiele diagram. c. If L/V = M × (L/V)min , find the multiplier M (M > 1).

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