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Modern ABC of chemistry class 11 Pdf
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In these examples, reactions involve the removal of oxygen or an electronegative element (chlorine) and therefore, are reduction reactions.
The substances shown colored have undergone reduction. Reducing Agent A substance that provides hydrogen or removes oxygen is called a reducing agent or reductant.
For example, in examples (i) and (ii), H, and H., S act as reducing agents because these cause reduction of Cl, and Br, Similarly, in reactions (iii) and (iv), Fe and SnCl, act as reducing agents because these add electropositive elements Fe and Hg.
Similarly, in reactions (v) and (vi), H, and CO act as reducing agents because these remove oxygen from CuO and Fe,0O, respectively. In reactions (vii) and (viii), H, and Na act as reducing agents because these remove electronegative element (Cl) from FeCl, and SiCl,.Oxidation-Reduction Reactions Complementary: go side by side Oxidation-reduction reactions are complementary reactions.
Whenever any substance is oxidized, another substance is always reduced at the same time and vice versa. In other words, the oxidation-reduction reactions always occur simultaneously 1.e., they always 70 hand in hand or side by side. For example, consider the reaction…Download the full book from the link below.
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