12/9/2023 0 Comments Anode v cathode![]() ![]() positive ions discharge according to the order of ease to gain e-(s): : Ag+>Cu2+>H+ >other metal ions The ion discharge is same as in dilute solution unless Mercury is used as anode.Ĩ D. negative ions discharge according to the order of ease to lose e-(s): OH->I->Br->Cl- although OH- is more readily to give electrons, however due to concentration effect (I-/Br-/Cl- are present in larger amount), I-/Br-/Cl- are discharged instead. Electrolysis of conc solution by using inert electrodeīy concentration effect, the ions to be discharge may be different from the dilution solution. Electrolysis of conc solution by using inert electrodeĢH+(aq) + 2e- H2(g) 2Cl-(aq) Cl2(g) + 2e-ħ C. H+ ions discharge, as it is more readily to accept electrons.( Cu2+/Ag+ discharges if they are present)Ħ C. OH- ions discharge, as it is more readily to give electrons than other negative ions positive ions go to anode and discharge in the order : Ag+>Cu2+>H+ >other metal ions e.g. ![]() Preference of discharge of ions (according to the E.C.S) negative ions go to anode and discharge in the order: OH->I->Br->Cl- >SO42-, NO3- e.g. Electrolysis of dilute solution by using inert electrode Rubber bands graphite electrodes wooden piece electrolysis cell very dilute sodium chloride solution partition e– – + 6 V 4OH-(aq) O2(g) + 2H2O(l)+ 4e- 2H+(aq) + 2e- H2(g) Cl- OH- Na+ H+ĥ B. No preference of discharge of ions + pole attracts negative ions, vice versa 2Br-(l) Br2(g) +2e- Pb2+(l) + 2e- Pb(l)Ĥ B. Electrolysis of molten substance by using inert electrode 1 negative electrode (anode) positive electrode (cathode)Įlectrolysis negative electrode (anode) positive electrode (cathode) anode cathode electrolyte electron flow + -Ģ What is electrolysis? By using electricity to decompose chemical substances in which a redox reaction is forced to take place What is cathode and anode? Red cat, An ox What is positive and negative pole? According to the batteryģ A.
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