solubility 2

 

🌊 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 (solute) to dissolve in a solvent."

📘 Scientific Definition:

"Solubility is the amount of solute (in grams or moles) that dissolves in 100 g of solvent at a given temperature to form a saturated solution."

✅ Key Points:

  • Solubility is temperature dependent.

  • It differs for solid, liquid, and gas solutes.

  • It is usually expressed in g/100 g solvent or mol/L.

📊 Examples:

Solute Solvent Solubility at 25°C
Sugar Water ~211 g per 100 g water
Salt (NaCl) Water ~36 g per 100 g water
Oxygen Water ~0.003 g per 100 g water

🔄 Types of Solubility:

Solute State Solvent Example
Solid in liquid Sugar in water 🍬 in 💧
Liquid in liquid Alcohol in water Sanitizer
Gas in liquid CO₂ in soda Fizzy drinks 🥤

🧠 Why is Solubility Important?

  • Used in making medicines, beverages, fertilizers

  • Helps predict reaction feasibility

  • Crucial in environmental science (e.g., oxygen in water for fish)

Would you like a diagram or chart to visually explain solubility to your students?

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