3% solution of glucose is isotonic with 1% of a non-volatile non-electrolyte substance. The molecular mass of the substance would be:
A. 30
B. 60
C. 90
D. 120
To determine the molecular mass of the non-volatile non-electrolyte substance, we need to use the concept of isotonic solutions. Isotonic solutions have the same osmotic pressure, which means they have the same number of solute particles per unit volume.
Given:
A 3% glucose solution is isotonic with a 1% solution of the unknown substance.
Glucose (C₆H₁₂O₆) has a molecular mass of approximately 180 g/mol. Therefore, the molecular mass of the unknown substance is 60.
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