Question 8.
According to Henry's law:
The equilibrium concentration of dissolved oxygen * Henry's constant (KH) = pressure of oxygen
i.e. Equilibrium concentration of dissolved oxygen * 730 atm.L/mol = (21/100) * 0.62 atm
i.e. Equilibrium concentration of dissolved oxygen = 1.7836*10-4 mol/L
= 1.7836*10-4 mol/L * 32 g/mol
= 5.71 mg/L
the equilibrium concentration of dissolved oxygen jn mg/L in Lake Titicaca. The elevation is 3.850 m...
Lake Titicaca is located high in the Andes Mountains between Peru and Bolivia. Its surface is 3811 m above sea level, where the average atmospheric pressure is 0.636 atm. During the summer, the average temperature of the water’s surface rarely exceeds 15°C. What is the solubility of oxygen in Lake Titicaca at that temperature? Express your answer in molarity and mg/L.
Lake Titicaca is situated at an altitude of 3810 m in the Bolivian Andes. Calculate the solubility of oxygen (in mg/L) in this lake at a temperature of 8.47 ºC. The Henry's Law constant at this temperature is 1.90×10-8 mol L-1Pa-1
a) Determine the saturation dissolved oxygen concentration at sea-level at 1 atm and 20° C in units of ppm. b) Determine the saturation DO near Santa Fe, NM (elevation = 7000 feet, atmospheric pressure = 0.8atm).
Lake Titicaca is situated at an altitude of 3810 m in the Bolivian Andes. Calculate the solubility of oxygen in this lake at a temperature of 5C. (The Henry’s law constant at 5C is 1.9x10-8 mol L-1 Pa-1. The vapour pressure of water is approximately 870 Pa at 5C)
Calculate the concentration in units of mg/L for oxygen dissolved in 1050.0 mL of water at 25 °C, if the partial pressure of O2 in gas phase in equilibrium with the water is 238.1 mm Hg. Assume the density of water =1 g/mL
Using your temperature measurements and assuming a volumetric concentration of oxygen in the air of 21% and an atmospheric pressure of 1 atm: Find the oxygen equilibrium concentration in the water both in mol/L and mg/L for the following temperatures in Celsius: 7.9, 8.1, 9.07, 9, 8.83
Calculate the theoretical oxygen demand for a 130 mg/L aqueous solution of lactic acid (C3H6O3). Calculate the equilibrium concentration of dissolved oxygen in 25°C water at sea level (p = 1.00 atm), and again at 4000 m elevation in 5°C water. [Use the exponential p vs. z equation, not the empirical formula.]
Calculate the mass of oxygen (in mg) dissolved in a 5.00 L bucket of water exposed to a pressure of 1.13 atm of air. Assume the mole fraction of oxygen in air to be 0.41 and the Henry's law constant for oxygen in water at this temperature to be 1.3 × 10-3 M/atm. 96.3 mg 49.4 mg 63.2 mg 48.2 mg
1.The dissolved oxygen concentration in a sample of freshwater at 15 C is measured at 13 mg/L What is the oxygen volume (mL) contained in a 1 liter sample at 1 atmosphere? *Hint use the ideal gas law P V =n•R•Twhere P is absolute pressure in atmosphere, V is volume in liters, n is number of moles, R is the gas constant for Oxygen (R= 0.082 L-atm-K-mol), T is absolute temperature in degrees Kelvin (K="C +273.15), and the molecular weight...
26 Calculate the equilibrium concentration of dissolved oxygen in 15°C water at 1 atm, and again at 2,000 m elevation. Suppose the gas above the soda in a bottle of soft drink is pure CO2 at a pressure of 2 atm. Calculate (CO2) at 25°C. 27