Chemistry

12th

grade

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PRE-TEST SIFAT KOLIGATIF LARUTAN

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4 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt

    Sebanyak 4 gram NaOH (Massa molar= 40 g/mol) dilarutkan dalam air sehingga volume larutan 400 ml. Hitunglah kemolaran larutan tersebut.

    0,25 mol L-1

    0,50 mol L-1

    0,20 mol L-1

    2,5 mol L-1

  • 2. Multiple Choice
    30 seconds
    1 pt

    Hitunglah molalitas larutan yang terjadi bila 24 gram kristal MgSO4 dilarutkan dalam 400 gram air. ( Massa molar MgSO4 = 120 ).

    0,25 molal

    0,5 molal

    0,75 molal

    1 molal

  • 3. Multiple Choice
    45 seconds
    1 pt

    Hitunglah fraksi mol glukosa di dalam larutan glukosa 36 % ( Massa molar glukosa = 180 g/mol; Massa molar air = 18 g/mol).

    5,3

    0,53

    0,053

    0,0053

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