* Chemical Bonding: Salt is an ionic compound formed by the strong electrostatic attraction between sodium (Na+) and chlorine (Cl-) ions. This bond is very strong and requires significant energy to break.
* Electrolysis: The most common method to obtain chlorine from salt is through electrolysis. This process involves passing an electric current through a brine solution (salt dissolved in water). The electric current forces the ions to move to oppositely charged electrodes, where they are discharged:
* At the anode (positive electrode): Chloride ions (Cl-) are oxidized to produce chlorine gas (Cl2).
* At the cathode (negative electrode): Sodium ions (Na+) are reduced to form sodium metal (Na), which immediately reacts with water to form sodium hydroxide (NaOH) and hydrogen gas (H2).
Summary:
* Simple physical separation is impossible.
* Electrolysis is the primary method for obtaining chlorine from salt.
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