2026
SOLUTIONS
TUTOR AND FRIEND
Study
Sprint247
Date: March 31, 2026
, Chemistry Revision Notes:
Solutions
1. Definition & Basics
A solution is a homogeneous mixture of two or more non-reactive components whose
composition can be varied within certain limits.
• Solute: The component present in smaller quantity.
• Solvent: The component present in larger quantity (determines physical state).
• Binary Solution: Contains exactly two components.
Examples: Sugar in water (Solid in Liquid), Iodine in alcohol (Tincture of Iodine).
2. Concentration of Solutions
Term Formula / Definition
Mass % (w/w) (Mass of solute / Total mass of solution) × 100
Volume % (v/v) (Volume of solute / Total volume of solution) × 100
Moles of solute / Volume of solution in Liters
Molarity (M)
Temperature Dependent
Moles of solute / Mass of solvent in Kilograms
Molality (m)
Temperature Independent
Mole Fraction (x) ni / Σn (Sum of all mole fractions is always 1)
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