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2. (20 points) Microorganisms are grown in laboratory reactors to study their effectiveness in destroying hazardous organic compounds. Ammonium chloride (NH4Cl) is a soluble salt that is often added to the reactor to provide a source of the nutrient nitrogen to the microorganisms. Consider a 4L closed vessel to which 1L of water containing 500mg/L of ammonium chloride is aded. Consider the dissociation equilibrium of the ammonium ion and solution-gas equilibrium of ammonia gas, calculate the pH in solution and the PNH4. You can neglect all other chemicals (beside water) that may be present in solution