Question

write electrode reactions and explain them in detail...ans fast​

Answer 1

answer :-

An electrode reaction refers to the net oxidation or reduction process that takes place at an electrode.

This reaction may take place in a single electron-transfer step, or as a succession of two or more steps. The substances that receive and lose electrons are called the electro active species.

dissociation of NaOH :
NaOH →Na+ + OH−

Dissociation of H2O :
H2O →H+ +OH−

Since water is more easily reduced than sodium ions, reaction at cathode :
4H2O +4e →2H2 + 4OH−

reaction at anode :
4OH− →O2 + 2H2O + 4e

Answer 2

if the electrolysis is taking place at cathode(negative electrode)

then the cations(the positive ions) will move towards it.

cations__cathode

and cathode is an reducing electrode ..i.e: being an negative electrode it is an electron giver/donor.

so if y is a cation with valency +1 , the reaction will be:

y+1   +1e- ____y(neutral ion)

and if the electrode is a positive one,,,

it is called anode and negative ions(anions)  moves towards it.

anode is an oxidizing electrode...i.e the name itself oxidation means removal of electrons.

so if x is an anion then the anode reactions will be

(x with valency -1)

x-1   -1e- ____x(neutral ion)

hope it helps u!

all the best