CHE230H1 Midterm: CHE230_2010_qs_1292015329

• School: UTSG
• Department: Chemical Engineering and Applied Chemistry
• Course: CHE230H1
• Professor: All

Document Summary

Tutorial problem 2b - solutions: the henry"s law constant for the dissolution of oxygen into water at 25 c is. 1. 3 x 10-3 (in m, bar) while at 10 c it is 1. 9 x 10-3. Calculate the dissolved oxygen concentration in cooling water at 35 c released from a power plant. Require kh at 35 c, which can be determined using the clausius-clapeyron equation: ln. Must first solve for h using kh at 25 c and 10 c. Use kh at 35 c to solve for [o2(aq)] : Kh = ([co2(aq)]/1m) / (pco2/1bar: the ph of the rain drop assuming that the only reaction involved is: [co2(aq)] = (1. 29 x 10-5 mol/l) (44 g/mol) (1000 mg/g) (1 l/ 1 kg) = 0. 568 ppm. K = 4. 5 x 107 (aq) (aq)] [hco3 (aq) + hco3 x x. [co2 (aq)] = khpco2 = (3. 4 x 10-2 m/bar)(450 x 10-6 bar) = 1. 53 x 10-5 m similar to b)