solubility 1

 

🧪 What is Solubility?

Solubility is the maximum amount of solute that can dissolve in a given amount of solvent at a specific temperature and pressure to form a saturated solution.

📘 Simple Definition:

“Solubility is the ability of a substance to dissolve in a solvent.”

🧠 Example:

  • At 25°C, 36 grams of salt (NaCl) can dissolve in 100 grams of water.
    → So, the solubility of NaCl in water at 25°C = 36 g/100 g water

🧩 Types of Solubility (Based on Solute Type):

Type of Solute Example Solvent
Solid in Liquid Sugar in water Water
Gas in Liquid CO₂ in soda Water
Liquid in Liquid Alcohol in water Water

🔥 Factors Affecting Solubility:

  1. Nature of solute and solvent
    – “Like dissolves like” (polar dissolves polar, non-polar dissolves non-polar)

  2. Temperature
    – Solubility of solids increases with temperature.
    – Solubility of gases decreases with temperature.

  3. Pressure (for gases only)
    – More pressure = More gas dissolves (Henry’s Law)

Would you like a diagram or animation idea to explain solubility visually in class?

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