Acidic gases, such as CO₂ and H₂S, must be removed from natural gas prior to use. You want to remove the H₂S from a feed gas that is 1% mol H₂S and the rest CH4. In a single stage the feed gas, with 100 mol/minute of CH4, will be passed through water. Assume that water will not go into the gas, and that CH4 will not go into the water. The solubility of H₂S in water can be described by Henry's Law, see the attached Figure. How much water (in L/min) do you need so that the feed gas exits with 0.15% mol H₂S at 25 °C and pressure of 68 atm? 1/H₂, (1/atm) 4 2 10-1 8 6 4 2 10-² 8 6 4 10-3 8 4 2 10-4 8 6 4 2 10-5- 0 C1₂ CO 0₂ CHA I 10 20 1 30 NH3 C₂H6 H₂ SO₂ H₂S C₂H4 CO₂ N₂1 40 50 60 70 Temperature, C Cl₂ 80 Br₂ H₂S 90 100

Describe the similarities and differences between the Lewis method and the Rigorous method.

Explain the chemical processes of esterification, pyrolysis and polymerization.

Why must solvent be accounted for in calculating the enthalpic contribution to folding? What is the entropic contribution that solvent makes to folding? Can you please explain your answer??