Chlorine

Chlorine, Cl₂, does not react with oxygen, O₂, and nitrogen, N₂.


Chlorine react with carbon monoxide, CO, forming COCl₂ [5].

Cl₂(g) + CO(g) COCl₂(g)

Chlorine, Cl₂, reacts with hot aqueous alkali, forming chlorate, ClO₃⁻.

3 Cl₂(g) + 6 OH⁻(aq) ClO₃⁻(aq) + 5 Cl⁻(aq) + 3H₂O(l)

Fluorine, F₂, reacts with chlorine, Cl₂, at 225 °C, forming ClF and ClF₃.

Cl₂(g) + F₂(g) 2 ClF(g)
Cl₂(g) + 3 F₂(g) 2 ClF₃(g)

Excess fluorine at 350 °C and 225 atmospheres pressure will give ClF₅ instead.

Cl₂(g) + 5 F₂(g) 2 ClF₅(g)


In gas phase, chlorine, Cl₂ will react with bromine, Br₂, forming ClBr.

Cl₂(g) + Br₂(g) 2 ClBr(g)


In gas phase, at room temperature, chlorine, Cl₂ will react with iodine, I₂, forming ClI.

Cl₂(g) + I₂(g) 2 ICl(s)

Hydrogen reacts with Cl₂ forming hydrogen chloride. The reaction is slow at room temperature, and increases in speed with increasing temperatures. The reaction can be explosive under the right conditions [5].

H₂(g) + Cl₂(g) 2 HCl(g)

Cadmium reacts directly with Cl₂ in aqueous solution [4].

Cd(s) + Cl₂(aq) Cd²⁺(aq) + 2 Cl⁻(aq)


Calcium reacts with Cl₂ forming calcium chloride [5].

Ca(s) + Cl₂(g) CaCl₂(s)


Lithium reacts with Cl₂ forming lithium chloride [5].

2 Li(s) + Cl₂(g) 2 LiCl(s)


Magnesium react with Cl₂ forming magnesium chloride [5].

Mg(s) + Cl₂(g) MgCl₂(s)


Manganese reacts with Cl₂ forming manganese(II)chloride [5].

Mn(s) + Cl₂(g) MnCl₂(s)


Silicon reacts with Cl₂ forming silicon chloride [5].

Si(s) + 2 Cl₂(g) SiCl₄(l)


Tin reacts with Cl₂ forming tin(IV)chloride [5].

Sn(s) + 2 Cl₂(g) SnCl₄(s)

Phosphorus reacts with excess Cl₂ forming phosphorus chloride [5].

P₄(s) + 10 Cl₂(g) 4 PCl₅(s)

with excess phosphorous [5], the reaction is

2 P(s) + 3 Cl₂(g) 2 PCl₃(s)
PCl₃(s) + Cl₂(g) PCl₅(s)

Sulfur reacts with excess chlorine forming sulfur(I)chloride or sulfur(II)chloride [5]:

2 S(s) + Cl₂(g) S₂Cl₂(s)
S(s) + Cl₂(g) SCl₂(s)


Chlorine reacts with SO₂ forming SO₂Cl₂ [5]:

SO₂(g) + F₂(g) SO₂F₂(g)


Chlorine reacts with H₂S forming HCl [5]:

H₂S(g) + Cl₂(g) 2 HCl(g) + S(s)

Chlorine, Cl₂, reacts with water, forming hypochlorite, ClO⁻ [5].

Cl₂(g) + H₂O(l) OCl⁻(aq) + 2 H⁺(aq) + Cl⁻(aq)