What reactions take place at the cathode and the anode when each of the following is electrolyzed? a. molten NiBr 2 b. molten AlF 3 c. molten MnI 2

Interpretation:

The reactions that take place at the cathode and the anode when molten NiBr2 , AlF3 and MnI2 are electrolyzed.

Concept introduction:

The non-spontaneous reaction takes place in an electrolytic cell in which there occurs conversion of electrical energy into chemical energy and this is used for the electrolysis of a metal. The electrolytic cell involves a cathode and an anode, both dipped into an electrolytic solution having both the positive and negative ions.

To determine: The reactions that take place at the cathode and the anode when molten NiBr2 is electrolyzed.

The reaction taking place at cathode is,

Ni2++2e−→Ni

The reaction taking place at anode is,

2Br−→Br2+2e−

Explanation

In the electrolysis process, the cations move towards the cathode and the anions move towards the anode. The anions lose electrons at the anode and get converted to a neutral species, while the cations accept the electrons from the cathode that are transferred to it by the anode and get converted to a neutral species.

The electrolysis of molten NiBr2 is represented by the reactions taking place at the cathode and the anode. The reaction involved for electrolysis is,

NiBr2→Ni2++2Br−

The reaction taking place at cathode is,

Interpretation:

The reactions that take place at the cathode and the anode when molten NiBr2 , AlF3 and MnI2 are electrolyzed.

Concept introduction:

The non-spontaneous reaction takes place in an electrolytic cell in which there occurs conversion of electrical energy into chemical energy and this is used for the electrolysis of a metal. The electrolytic cell involves a cathode and an anode, both dipped into an electrolytic solution having both the positive and negative ions.

To determine: The reactions that take place at the cathode and the anode when molten AlF3 is electrolyzed.

The reaction taking place at cathode is,

Al3++3e−→Al

The reaction taking place at anode is,

2F−→F2+2e−

Interpretation:

The reactions that take place at the cathode and the anode when molten NiBr2 , AlF3 and MnI2 are electrolyzed.

Concept introduction:

The non-spontaneous reaction takes place in an electrolytic cell in which there occurs conversion of electrical energy into chemical energy and this is used for the electrolysis of a metal. The electrolytic cell involves a cathode and an anode, both dipped into an electrolytic solution having both the positive and negative ions.

To determine: The reactions that take place at the cathode and the anode when molten NiBr2 is electrolyzed.