Question

what is redox reaction?why each displacement rxn is known as redox rxn?​

Answer 1

Answer:

(A) redox reaction is a reaction in which both reduction and oxidation takes place simultaneously.

(B) MnO2 + HCl gives MnCl2 + H2O

here, there is reduction in MnO2 and MnCl2 (because electronegative element(oxygen) is getting reduced)

also there is oxidation in HCl and H2O (because electronegative element(clorine) is getting oxidised)

(C) In the above reaction, the oxidising agent is MnO2 and reducing agent is HCl.

Hope it helps.

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Answer 2

Answer:

Reduction of hydrogen and addition of oxygen is known as oxidation rxn

Addition of hydrogen and removal of oxygen is known as reduction rxn.

Both reduction and oxidation is known as redox rxn