A mixture of 2.3 g ethanol (C₂H₅OH) and 4.8 g methanol (CH₃OH) is dissolved in water to make 250 mL of solution. What is
Moles of ethanol = 2.3/46 = 0.05 mol; moles of methanol = 4.8/32 = 0.15 mol. Total moles = 0.05 + 0.15 = 0.2 mol. Molarity = 0.2/0.25 = 0.8 M.
Ref: NCERT Class 11 Chemistry > Chapter 1: Some Basic Concepts of Chemistry > Topic: Concentration Terms - Molarity Molality and Mole Fraction