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Calculate the mass of compound (molar …

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Calculate the mass of compound (molar mass =256gm/mol) to be dissolved in 75gm of benzene to lower it's freezing point by 0.48k(kf=5.12 Kkg /mol).

    • Posted by Kamlesh Kumar 6 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 4 answers

    ? Natasha Yadav? 6 years, 5 months ago

    Most welcome

    0Thank You

    Ďãřşháñăã Yadav ? ? ? 6 years, 5 months ago

    thx ?

    1Thank You

    ? Natasha Yadav? 6 years, 5 months ago

    Good answer.

    1Thank You

    Ďãřşháñăã Yadav ? ? ? 6 years, 5 months ago

    ➡️Tf =0.48k ➡️Kf =5.12 k kg / mol ➡️WA =75g ➡️MB= 256 g/ mol ➡️WB =? ➡️ Tf = Kf ×WB×1000/MB×WA ➡️ WB = Tf×MB×WA/Kf ×WB×1000 ➡️ WB = 0.48×256×75/5.12×1000 ➡️ WB = 18 g

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