Oxidation and and Reduction
Oxidation and Reduction are chemical reactions that involve heat.
(a)hydrogen is removed from the substance.
(b)oxygen is added to the substance.
(c)the substance loses electrons.
Reduction describes those chemical reactions in which:
(a)hydrogen is added to substance.
(b)oxygen is removed from the substance.
(c)the substance gains electrons.
1)An example is magnesium burn s in air, magnesium is oxidised by the addition of oxygen, and oxygen is reduced. The oxygen is the oxidising agent while magnesium is the reducing agent.
2)another example is : zinc dissolves in dilute hydrochloric acid. Zinc is oxidised by the addition of chlorine and hydrogen is reduced. The chlorine ions are neither oxidised or reduced. Zinc is the reducing agent while the hydrogen ions are the oxidising agent.
No comments:
Post a Comment