The basic information about the water chemistry

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2. Water Chemistry
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3. Contents
 Introduction to water
 Chemical reactions of water with,
Halogens
Alkali metals
Alkaline Earth metals
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4. Introduction to water
 Water (H2O) is a polar inorganic compound that is
at room temperature a tasteless and odorless liquid.
 It is described as the "universal solvent" for its ability
to dissolve many substances.
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5. Chemical reaction of the water
 With Halogens
2F2(g)+2H2O(g)→4HF(g)+O2(g)
Cl2+H2O → HCl+ HClO
Br2+H2O →HBr+ HBrO
• Iodine is slightly soluble in water.
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6. With The Alkali Metals
 All the alkali metals react vigorously with halogens to
produce salts, the most industrially important of
which are NaCl and KCl.
 2Na(s)+Cl2(g)→2NaCl(s)
 Sodium Chloride is used as a preservative.
 KCl is important for plant fertilizers because of
the positive impact of potassium on plant growth.
 2K(s)+Cl2(g)→2KCl(s)
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7. With The Alkaline Earth Metals
 The alkaline earth metals react to form hydrated halides.
These halides are ionic except for those
involving beryllium (the least metallic of the group).
Because alkaline earth metals tend to lose electrons and
halogen atoms tend to gain electrons, the chemical
reaction between these groups is the following:
•M+X2→MX2
 Where,
 M represents any metal from Group 2 and
 X represents fluorine, chlorine, bromine or iodine.
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