What will be the molality of chloroform in the water sample which contains 15 ppm chloroform by mass?

  1. A

    1.25 x 10-4 m

  2. B

    2.5 x 10-4 m

  3. C

    1.5 x 10-3 m

  4. D

    1.25 x 10-5 m

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    Solution:

    15 ppm=15106×102=1.5×103 g
    Molarity of CHCl3 solution =1.5×103100×1000119.5
    = 1.25 x 10-4 m

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