chemistry

Calculate the vapor pressure lowering of water when 5.67 g of glucose, C6H12O6, is dissolved in 25.2 g of water at 25 ºC. The vapor pressure of water at 25º C is 23.8 mmHg. What is the vapor pressure of the solution?

asked by MJ
  1. mols glucose = g/molar mass
    mols H2O = grams/molar mass

    XH2O = n H2O/total mols, then
    Psoln = XH2O*Ponormal

    For lowering, use
    delta Psolvent =Xsolute*Ponormal

    posted by DrBob222
  2. 100 gram solution of 10 gram of magnesium.klorida and 90 gram of water what is the vapor pressure lowering of a solution if p h2o=31 mmhg

    posted by nia

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