The solubility of air in water is approximately 2.1 times 10^-3 M at 20 degree C...
a) b) c) COAST Tutorial Problem The solubility of air in water is approximately 2.1 x103 M at 20°C and 1.0 atm. Calculate the Henry's law constant for air Number mol/ L atm Is the KH value of air approximately equal to the sum of the KH values of N2 and O2 because these two gases make up 99% of the gases in air? O Yes O No
A 1.00 L sample of dry air at 25 degree C and 786 mm Hg contains 0.925 g N_2 plus other gases including oxygen, argon, and carbon dioxide. A. What is the partial pressure (in mm Hg) of N_2 in the air sample? B. What is the mole fraction and mole percent of N_2 in the mixture? (Daltons law of partial pressures) Calculate the rms speed of O_2 molecules in a tank at 21 degree C and 15.7 atm.
Determine the solubility of N2 in water exposed to air at 25°C if the atmospheric pressure is 1.2 atm. Assume that the mole fraction of nitrogen is 0.78 in air and the Henry's law constant for nitrogen in water at this temperature is 6.1 × 10-4 M/atm.
6.) The solubility of CO2 (g) in water is 3.2 x 102 M at 25.0 °C and 1.0 atm pressure. a.) What is the Henry's Law constant for CO2 (g)? Cg = k P, ; Cg = concentration in M; k = Henry's Law constant in mol L atm*'; P. = pressure in atm. 3.2 x 10-2 M=k (1.0 atm) (3.2 x 10-2 M)/(1.0 atm) = k = 3.2 x 10-2 M/atm = 3.2 x 10-2 mol L atm" b.)...
The solubility of lead(II) fluoride, PbF_2, in pure water is 2.1 times 10^-3 moles per liter. Calculate the value of K_sp for lead(II) fluoride from this data. a. 1.3 times 10^-7 b. 1.9 times 10^-8 c. 3.7 times 10^-8 d. 1.6 times 10^-9 e. 9.3 times 10^-9 In an experiment, it is planned to add 300 mL of 2.0 times 10^-5 M AgNO_3 to 300 mL of 2.0 times 10^-9 M NaI. Will a precipitate form? What is the precipitate?...
One mole of sodium chloride is added to 100 ml of water in beaker A. One mole of glucose, C_6H_12O_6, is added to 100ml of water in beaker B. How much more will the freezing point of water be lowered in beaker A than in beaker B? Two thirds as much twice as much three times as much Beakers A and B will experience the same degree of freezing point depression. It is impossible to determine. Which of the following...
3. At 20 °C, the solubility of oxygen gas in water is 1.38 × 10–3 M at a partial pressure of 1.0 atm. What is the solubility of O2 in water when its partial pressure is decreased to 0.21 atm at the same temperature?
8. The Henry's law constant for the solubility of nitrogen in water is 6.4 x 104 M/atm at 25°C. At 0.75 atm of N2, what mass of N2(8) dissolves in 1.0 L of water at 25°C? a. 4.8 x 104 g b. 8.5 x 104 g c. 4.5 x 10' g d. 1.3 x 104g e. 2.4 X X X 09 9 0
3. The Henry's law constant for the solubility of 10-4 Matm at oxygen in water is 3.30 x 128 C and 2.85 x 104 M/atm at 22 C. Aiır is 21 mol% oxygen. (a) How many grams of oxygen can be dissolved in one liter of a trout stream at 128 C at an air pressure of 1.00 atm? (b) How many grams of oxygen can be dissolved per liter in the same trout stream at 22 ℃ at the same pressure...
The Henry's law constant (kh) for O2 in water at 20°C is 1.28 x 10-3 mol/(L'atm). (a) How many grams of O2 will dissolve in 4.75 L of H20 that is in contact with pure 02 at 1.00 atm? g 02 (b) How many grams of O2 will dissolve in 4.75 L of H20 that is in contact with air where the partial pressure of O2 is 0.209 atm? g 02