Question

8. REDOX REACTION

I One Mark Questions:

1. What happens to the oxidation number of an element during oxidation?

[F 15]

2. What is the oxidation number of the element in free state? [F-16) 3. > Fet + 2e is this oxidation or reduction?[M-16

Fe

4. Name a compound in which oxidation number of oxygen is +1?

[F-14)​

Answer 1

Answer:

1. oxidation number represent the potential charge of an atom it its ionic state . If an a terms oxidation number decreases in a reaction it is reduced if an atom oxidation number increases it is oxidised.

2. the oxidation state of free element is zero for a simple iron the oxidation state is equal to the net charge on the iron for example chlorine - has a Oxidation state of -1 when present in most compound hydrogen has the oxidation state of + 1 and oxidation on Oxidation state of -2.

3. oxygen is a compound usually has the oxidation number -2 per oxidized are in exception to this rule in hydrogen peroxide as to go to for example the oxidation number of oxygen is -1 the sum of oxidation number of the written in a compound is zero.