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daniellao

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Everything posted by daniellao

  1. as of so far i tried to put the number into the equation lnp2/p1=hvap/R(1/t1-1/t2)
  2. Which of the following aqueous solutions will have the lowest vapor pressure a.).50M AlCl3 b.).60M H2SO4 c.).75M Mg(NO3)2 d.)1M NaCl e.)1M C6H12O6
  3. In 1 atm of pure oxygen, the solubility of O2 in water is 1.38x10^-3 mol/L at 25 degrees celcius. The mole fraction of oxygen in air is .210. If the atmospheric pressure is 1 atm, what is the solubility of oxygen in air at 25 degrees celcius?
  4. Naphthalene, a substance present in some mothballs, has an enthalpy of vaporization of 49.4kl/mol. If the vapor pressure of naphthalene is .300mmhg at 298K, what is the temp at which the vapor pressure is 7.6x10^2mmhg?
  5. Sulfur dioxide has an enthalpy of vaporization of 24.9kj/mol. At 205K, SO2 has a vapor pressure of 30.3mmhg. What is the normal boiling point temp of SO2?
  6. Carbon tetrachloride, an organic solvent, has an enthalpy of vaporization of 29.82kj/mol. If CCl4 has a normal boiling point of 3.5x10^2K, what is its vapor pressure at 273K?(the question is written exactly how i have it on my homework)
  7. its exactly how the question is written, and how my professor gave it to me.... thats y i am very confused
  8. Carbon tetrachloride, an organic solvent, has an enthalpy of vaporization of 29.82kj/mol. If CCl4 has a normal boiling point of 3.5x10^2K, what is its vapor pressure at 273K?
  9. Sulfur dioxide has an enthalpy of vaporization of 24.9kj/mol. At 205K, SO2 has a vapor pressure of 30.3mmhg. What is the normal boiling point temp of SO2?
  10. Naphthalene, a substance present in some mothballs, has an enthalpy of vaporization of 49.4kl/mol. If the vapor pressure of naphthalene is .300mmhg at 298K, what is the temp at which the vapor pressure is 7.6x10^2mmhg?
  11. daniellao

    solubility

    In 1 atm of pure oxygen, the solubility of O2 in water is 1.38x10^-3 mol/L at 25 degrees celcius. The mole fraction of oxygen in air is .210. If the atmospheric pressure is 1 atm, what is the solubility of oxygen in air at 25 degrees celcius?
  12. 5.) Which of the following aqueous solutions will have the lowest vapor pressure a.).50M AlCl3 b.).60M H2SO4 c.).75M Mg(NO3)2 d.)1M NaCl e.)1M C6H12O6
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