(a) Giving reason identify the susanca ore and the substance reduced i

1.	(a) Giving reason identify the susanca ore and the substance reduced in each of the following chemical reactions :(i) H2 + CuO --> Cu + H2O(ii) H2S + SO2 --> 2S + 2H2O(b) Name the term used to represent a reaction in which ondation and reduction takepace simultaneously
Answer» Answer : ★ Oxidation : The process of adding OXYGEN to a substance is called oxidation. ★ Reduction : The process of losing oxygen from a substance is called reduction. $\hrulefill$ (a) (i) Substance oxidised : $\bold{H_2}$ $\bold{H_2}$ is oxidised here since it gains oxygen to become $\bold{H_2O}$ . Substance reduced : $\bold{CuO}$ $\bold{CuO}$ is reduced here since it LOSES oxygen to become $\bold{Cu}$ $\hrulefill$ (ii) Substance oxidised : $\bold{H_2S}$ $\bold{H_2S}$ is oxidised here since it gains oxygen in the given REACTION. Substance reduced : $\bold{SO_2}$ $\bold{SO_2}$ is being reduced here as it loses oxygen in the given reaction to become $\bold{S}$ $\hrulefill$ (b) A reaction in which oxidation & reduction takes PLACE SIMULTANEOUSLY is called a redox reaction.

(a) Giving reason identify the susanca ore and the substance reduced in each of the following chemical reactions :(i) H2 + CuO --> Cu + H2O(ii) H2S + SO2 --> 2S + 2H2O(b) Name the term used to represent a reaction in which ondation and reduction takepace simultaneously

Answer»

★ Oxidation : The process of adding OXYGEN to a substance is called oxidation.

★ Reduction : The process of losing oxygen from a substance is called reduction.

$\hrulefill$

(a) (i) Substance oxidised : $\bold{H_2}$

$\bold{H_2}$ is oxidised here since it gains oxygen to become $\bold{H_2O}$ .

Substance reduced : $\bold{CuO}$

$\bold{CuO}$ is reduced here since it LOSES oxygen to become $\bold{Cu}$

$\hrulefill$

(ii) Substance oxidised : $\bold{H_2S}$

$\bold{H_2S}$ is oxidised here since it gains oxygen in the given REACTION.

Substance reduced : $\bold{SO_2}$

$\bold{SO_2}$ is being reduced here as it loses oxygen in the given reaction to become $\bold{S}$

$\hrulefill$

(b) A reaction in which oxidation & reduction takes PLACE SIMULTANEOUSLY is called a redox reaction.