The term *“chemical activity”* refers to the *effective behavior of a substance in a mixture*, taking into account interactions between particles, rather than just its concentration. It’s commonly used in physical chemistry and thermodynamics.

Simplified explanation:

- In ideal solutions, *activity ≈ concentration*.

- In real solutions, due to interactions between molecules or ions, *activity ≠ concentration*.

- It represents *the tendency of a substance to react* or participate in a chemical reaction.

Basic formula:

- *a = γ · c*

- a = activity

- γ = activity coefficient (depends on the solution)

- c = concentration

*Example:*

- In pure water, the activity of a diluted solute is almost equal to its concentration.

- In concentrated solutions or with strong ions (e.g., NaCl), the activity differs from the concentration due to ionic interactions.

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2 hours ago, Adiel Barnabe João Quinan said:

The term *“chemical activity”* refers to the *effective behavior of a substance in a mixture*, taking into account interactions between particles, rather than just its concentration. It’s commonly used in physical chemistry and thermodynamics.

Simplified explanation:

- In ideal solutions, *activity ≈ concentration*.

- In real solutions, due to interactions between molecules or ions, *activity ≠ concentration*.

- It represents *the tendency of a substance to react* or participate in a chemical reaction.

Basic formula:

- *a = γ · c*

- a = activity

- γ = activity coefficient (depends on the solution)

- c = concentration

*Example:*

- In pure water, the activity of a diluted solute is almost equal to its concentration.

- In concentrated solutions or with strong ions (e.g., NaCl), the activity differs from the concentration due to ionic interactions.

OKy think about this thema don't forget that you have to search mor ever don't be limited to listen. By😊😊

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