will someone show me how to work these two problems please? Le Chatelier\'s Prin

Question

will someone show me how to work these two problems please?

Le Chatelier's Principle See Section 13-3.) 23. A sealed flask contains water and oxygen gas lpy of The O2 gas has a partial pressure of 1.5 atm. (a) What is the concentration of O2 in the water? (b) If the pressure of O2 in the flask is raised to 1.7, of solu- what happens to the amount of dissolved O,? What happens to the amount of dissolved O2 when the pressure of O2 gas drops to 1.0 atm? kJ/mol No . What NaCl 24. Butane, C4H10, has been suggested as the refrigerant in household compressors such as those found in air conditioners. (a) To which extent is butane soluble in water? Calcu- late the butane concentration in water if the pressure of the gas is 0.21 atm. (ku = 0.0011 mol/kg. barat 25 °C) some (b) If the pressure of butane is increased to 1.0 atm, does the butane concentration increase or decr ase or Raoult's Law L of (See Section 13-4 and Example 13 in

Explanation / Answer

Ans23:

Partial pressure of O2 p = 1.5atm

Henry's constant of O2 K = 1.28*10-3M/atm

a) Concentration of O2 C = Kp = 1.28*10-3*1.5 = 1.92*10-3M

b) If p1 = 1.7 atm

C1 = Kp1 =  1.28*10-3*1.7 = 2.176*10-3M

Increase in the concentration of O2 =  2.176*10-3M - 1.92*10-3M = 0.256*10-3M = 0.256mM

If p2 = 1.0 atm

C1 = Kp1 =  1.28*10-3*1.0 = 1.28*10-3M

Decrease in the concentration of O2 =  1.92*10-3M - 1.28*10-3M = 0.64*10-3M = 0.64mM

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