Chapter 20, Problem 21P

The saturation concentration of dissolved oxygen in water as a function of temperature and chloride concentration is listed in Table P20.21. Use interpolation to estimate the dissolved oxygen level for T = 18°C with chloride = 10 g/L.

TABLE P20.21 Dissolved oxygen concentration in water as a function of temperature (°C) and chloride concentration (g/L)

	Dissolved Oxygen (mg/L) for Temperature (°C) and Concentration of Chloride (g/L)
T, °C	c = 0 g/L	c = 10 g/L	c = 20 g/L
0	14.6	12.9	11.4
5	12.8	11.3	10.3
10	11.3	10.1	8.96
15	10.1	9.03	8.08
20	9.09	8.17	7.35
25	8.26	7.46	6.73
30	7.56	6.85	6.20