Chem

In the aqueous solution of H2SO4 its mole fraction is 0.2 then closest value of molality of
solution is
(1) 13.9 (2) 9.8
(3) 10.2 (4) 11.2

  1. 👍 13
  2. 👎 6
  3. 👁 2,620
  1. XH2SO4 = 0.2 so
    XH2O = 0.8

    Take 1 mol of the solution. That will contain 0.8 mols H2O. How many grams is that?
    0.8 mol x 18 gH2O/mol = 14.4 g or 0.0144 kg.
    molality = mols H2SO4/kg solvent
    0.2/0.0144 = ?m

    1. 👍 17
    2. 👎 6
  2. 13.9

    1. 👍 11
    2. 👎 2
  3. Gvmmcvn

    1. 👍 3
    2. 👎 5

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