Reactions of Period 3 Chlorides with Water
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AS CIE Chemistry revision
updated 10 years ago by rlamb2
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chemistry, education, teaching methods & materials, science & technology, science, physical & theoretical
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1

Period 3 Chloride: SODIUM

Bonding?
Electronegativity?
Reaction?
Equation?

Bonding: IONIC
Electronegativity: 0.9
Reaction: Dissolves to give Na+ and Cl- ions

2

Period 3 Chloride: MAGNESIUM

Bonding?
Electronegativity?
Reaction?
Equation?

Bonding: IONIC
Electronegativity: 1.2
Reaction: Dissolves to give Mg2+ and Cl- ions

3

Period 3 Chloride: ALUMINIUM

Bonding?
Electronegativity?
Reaction?
Equation?

Bonding: MAINLY COVALENT
Electronegativity: 1.5
Reaction: Hydrolyses
Equation: AlCl3 + 3H2O -> Al(OH)3 + 3HCl

4

Period 3 Chloride: SILICON
Bonding?
Electronegativity?
Reaction?
Equation?

Bonding: COVALENT
Electronegativity: 1.8
Reaction: Hydrolyses
Equation: SiCl4 + 2H2O -> SiO2 + 4HCl

5

Period 3 Chloride: PHOSPHOROUS

Bonding?
Electronegativity?
Reaction?
Equation?

Bonding: COVALENT
Electronegativity: 2.1
Reaction: Hydrolyses
Equation: PCl3 + 3H2O -> H3PO3 + 3HCl

6

Period 3 Chloride: SULPHUR

Bonding?
Electronegativity?
Reaction?
Equation?

Bonding: COVALENT
Electronegativity: 2.5
Reaction: Hydrolyses
Equation: 2S2Cl2 + 2H2O -> SO2 + 4HCl + 3S

7

Period 3 Chloride: CHLORINE

Bonding?
Electronegativity?
Reaction?
Equation?

Bonding: NO REACTION
Electronegativity: 3.0

8

Period 3 Chloride: ARGON

Bonding?
Electronegativity?
Reaction?
Equation?

Reaction: NO REACTION