When slaked lime (calcium hydroxide, Ca(OH)₂) reacts with chlorine (Cl₂), it undergoes a chlorination reaction to form calcium hypochlorite (Ca(ClO)₂), also known as bleaching powder.

Here's the balanced chemical equation for the reaction:

2Ca(OH)₂ + 2Cl₂ → Ca(ClO)₂ + CaCl₂ + 2H₂O

Let's break down the reaction:

* Slaked lime (Ca(OH)₂): This is a strong base and acts as a source of hydroxide ions (OH^-).

* Chlorine (Cl₂): This is a strong oxidizing agent and readily reacts with hydroxide ions.

* Calcium hypochlorite (Ca(ClO)₂): This is the main product and a powerful bleaching agent. It acts as a source of hypochlorite ions (ClO^-) which are responsible for its bleaching and disinfectant properties.

* Calcium chloride (CaCl₂): This is a byproduct of the reaction and is a common salt.

* Water (H₂O): This is also a byproduct of the reaction.

Important points to note:

* This reaction is typically carried out in a controlled environment to ensure safety. Chlorine gas is toxic and corrosive, and the reaction generates heat.

* The reaction is exothermic, meaning it releases heat.

* Bleaching powder is a valuable disinfectant and bleaching agent commonly used in water treatment, sanitation, and textile industries.

Let me know if you have any other questions.