Expressing Concentration of Solutions – Class 12 | Chapter – 2 | Chemistry Short Notes Series PDF for NEET & JEE

Expressing Concentration of Solutions: The concentration of a solution refers to the amount of solute (the substance being dissolved) present in a given amount of solvent (the substance doing the dissolving). 

Ways Expressing Concentration of Solutions

There are several ways to express the concentration of a solution, including:

• Molarity (M): Molarity is defined as the number of moles of solute per liter of solution. It is expressed in units of mol/L.
• Molality (m): Molality is defined as the number of moles of solute per kilogram of solvent. It is expressed in units of mol/kg.
• Mass percent (%): Mass percent is defined as the mass of solute per 100 grams of solution. It is expressed as a percentage.
• Parts per million (ppm): Parts per million is defined as the number of parts of solute per million parts of solution. It is often used for very dilute solutions.
• Volume percent (% v/v): Volume percent is defined as the volume of solute per 100 volumes of solution. It is often used for solutions of liquids in liquids.

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By Team Learning Mantras