Other Meanings
The other meaning of chemical synthesis is narrow and restricted to a specific kind of chemical reaction, a direct combination reaction, in which two or more reactants combine to form a single product. The general form of a direct combination reaction is:
- A + B → AB
where A and B are elements or compounds, and AB is a compound consisting of A and B. Examples of combination reactions include:
- 2Na + Cl2 → 2 NaCl (formation of table salt)
- S + O2 → SO2 (formation of sulfur dioxide)
- 4 Fe + 3 O2 → 2 Fe2O3 (iron rusting)
- CO2 + H2O → H2CO3 (carbon dioxide dissolving and reacting with water to form carbonic acid)
4 special synthesis rules:
- metal-oxide + H2O → metal(OH)
- non-metal-oxide + H2O → oxi-acid
- metal-chloride + O2 → metal-chlorate
- metal-oxide + CO2 → metal carbonate (CO3)
Read more about this topic: Chemical Synthesis
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