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JEE Main20246 Apr 2024Morning ShiftChemistrySome Basic Concepts of ChemistryActual

The density of ' (x ) ' ( M ) solution (' (X ) ' molar) of ( NaOH ) is (1.12 ~g ~mL ⁻¹ ), while in molality, the concentration of the solution is (3 ~m (3 molal ) ). Then (x ) is (Given : Molar mass of ( NaOH ) is (40 ~g / mol ) )

Options

  1. A3.5
  2. B3.8
  3. C2.8
  4. D3.0

Correct answer

D. 3.0

Step-by-step solution

aligned & Molality = 1000 M 1000 d - M ( Mw )_ solute & 3= 1000 x 1000 1.12-( x 40) & x =3 aligned

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