chemistry

posted by .

The vapor pressure of methanol is 84.0 mm Hg at 27.0°C. The ΔHvapor of methanol is 39.2 kJ/mol and R = 8.31 10-3 kJ/mol·K. Calculate the normal boiling point of methanol in Kelvin.

  • chemistry - still need help -

    Never mind that one. I figured it out. But please help me with this one.
    The vapor pressure of benzene, C6H6, is 60.0 mm Hg at 13.5°C. The molar heat of vaporization of benzene is 30.8 kJ/mol and R = 8.31 10-3 kJ/mol·K. What is the vapor pressure of benzene at 70.0°C?

  • chemistry -

    You say you figured out the methanol problem. This one is done the same way.
    p1 = 60 mm
    p2 = ?
    T1 = 13.5C + 273.15
    T2 = 70 + 273.15
    delta H vap = 30,800 J/mol.

  • chemistry -

    I keep getting 469, but that's apparently not the answer...

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    Methanol burns in oxygen to make carbon dioxide and water. The equation is exothermic, with 1452kJ/mol. of energy being released. methanol+oxygen=carbon dioxide+water 2CH3OH + 3O2 = 2CO2 + 4H2O -molar mass of methanol=32g/mol. Use …
  2. chemistry

    Methanol boils at 65Celcius. The vapor pressure of ethanol at 65Celcius is at 410 torr. for a mixture containing .200 mol of methanol and .100 mol of ethanlol (at 65 Celcius) calculate the: 1. partial pressure of each liquid 2. total …
  3. chemistry (science)

    What volume of methanol is formed if 2.86×10^11 of methane at standard atmospheric pressure and 25 degree celcius is oxidized to methanol?
  4. Chemisty

    What is the heat change in J associated with 44 g of solid methanol at -149 oC changing to liquid at -83 oC?
  5. chemistry

    the vapor pressure of ethanol at 20c is 44 mmHg and the vapor pressure of methanol at the same temperature is 94mmHg. A mixture of 30.0 g of methanol and 45.0 g of ethanol is prepared (and can be assumed to behave as an ideal solution). …
  6. general chemistry

    Methanol has a ΔHvap = 35.3 kJ/mol CH3OH. Calculate the change in heat, q, when 50.0 g methanol condenses?
  7. chemistry

    methanol CH3OH is used as race car fuel write the balanced equation for the combustion of methanol. change in heat= -174kcal/mol methanol for the process How man kilocal are released u burning 33.0g of methanol
  8. Chemistry- Dr. Bob222

    Methanol (CH3OH) is a colorless volatile liquid, formerly known as wood alcohol. It boils at 65.0 °C and has a heat of vaporization ΔHvap = 37.4 kJ/mol. What is methanol’s vapor pressure at 22.0 °C?
  9. AP Chemistry

    The normal boiling point of methanol is 64.7°C. A solution containing a nonvolatile solute dissolved in methanol has a vapor pressure of 642.3 torr at 64.7°C. What is the mole fraction of methanol in this solution?
  10. chemistry

    The normal boiling point of methanol is 64.7oC. A solution containing a nonvolatile solute dissolved in methanol has a vapor pressure of 670.0 torr at 64.7oC. What is the mole fraction of methanol in this solution?

More Similar Questions