2. Identify the substances that are oxidised
or Reduced in the following reactions?
i- C(s) + O₂(g) = CO₂ (g)
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Explanation:
To balance chemical equations you add coefficients in front of each molecule in such a way that the number of atoms in reactants are equal with the number of the atoms in products.
a) C + H₂O → CO + H₂
the chemical equation is balanced, no need for other coefficients (it is assumed 1 in front of each molecule as a coefficient)
b) Combustion it means that the hydrogen and carbon monoxide will react with oxygen.
2 H₂ + O₂ → 2 H₂O
2 CO + O₂ → 2 CO₂
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