what are the products of electrolysis of the following solutions?

A. potassium iodide
B. nickel sulphate
C. magnesium chloride

Exactly what is the solvent?

i do not understand this

The solvent is water is these are solutions? Right? And you do NOT get K metal at the negative pole, you get H2 gas.

A. potassium iodide

To determine the products of electrolysis for each solution, we need to understand the process of electrolysis and the type of ions present in each solution.

Electrolysis is a process in which an electric current is passed through an electrolyte, causing a chemical change. The electrolyte undergoes decomposition, and its ions migrate towards the electrodes, where they are either oxidized (lose electrons) or reduced (gain electrons), depending on their charges.

Let's analyze each solution separately:

A. Potassium Iodide (KI):
Potassium iodide is an ionic compound composed of potassium ions (K+) and iodide ions (I-). During electrolysis, positive ions move towards the negatively charged cathode, while negative ions move towards the positively charged anode.

At the cathode (negative electrode), reduction occurs. The potassium ions (K+) gain electrons and are reduced to form metallic potassium (K). The balanced equation is: 2K+ + 2e- -> 2K (reduction)

At the anode (positive electrode), oxidation occurs. The iodide ions (I-) lose electrons and are oxidized to form iodine molecules (I2). The balanced equation is: 2I- -> I2 + 2e- (oxidation)

B. Nickel Sulphate (NiSO4):
Nickel sulphate consists of nickel ions (Ni2+) and sulfate ions (SO4 2-). During electrolysis, positive ions move towards the cathode, while negative ions move towards the anode.

At the cathode, reduction occurs. The nickel ions (Ni2+) gain electrons and are reduced to form metallic nickel (Ni). The balanced equation is: Ni2+ + 2e- -> Ni (reduction)

At the anode, oxidation occurs. The sulfate ions (SO4 2-) lose electrons and are oxidized to form oxygen gas (O2) and release sulfur dioxide (SO2). The balanced equation is: 4OH- -> O2 + 2H2O + 4e- (oxidation)

C. Magnesium Chloride (MgCl2):
Magnesium chloride is composed of magnesium ions (Mg2+) and chloride ions (Cl-). During electrolysis, positive ions move towards the cathode, while negative ions move towards the anode.

At the cathode, reduction occurs. The magnesium ions (Mg2+) gain electrons and are reduced to form metallic magnesium (Mg). The balanced equation is: Mg2+ + 2e- -> Mg (reduction)

At the anode, oxidation occurs. The chloride ions (Cl-) lose electrons and are oxidized to form chlorine gas (Cl2). The balanced equation is: 2Cl- -> Cl2 + 2e- (oxidation)

Therefore, the products of electrolysis for each solution are:
A. Potassium Iodide (KI): Potassium metal (K) and Iodine gas (I2).
B. Nickel Sulphate (NiSO4): Nickel metal (Ni), oxygen gas (O2), and sulfur dioxide (SO2).
C. Magnesium Chloride (MgCl2): Magnesium metal (Mg) and chlorine gas (Cl2).