pls tell fast tommorrow is my exam.

Asked by srprusty | 4th Jan, 2010, 06:26: PM

Expert Answer:

Reactions in which oxidation and reduction takes place simultaneously are called redox reactions.

If a substance gains oxygen during a reaction, it is said to be oxidised.
If a substance loses oxygen during a reaction, it is said to be reduced.

During the above reaction  the copper(II) oxide is losing oxygen and is being reduced. Hydrogen is gaining oxygen and is being oxidised.

Answered by  | 5th Jan, 2010, 09:30: AM

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