whta are the products of electrolysis of the following solutions?

potassium iodide
nickel sulphate
and magnesium chloride

To understand the products of electrolysis, we can look at the electrolysis process and the components of each solution you mentioned.

For electrolysis to occur, we need an electrolyte, which is a substance that can conduct electricity when dissolved in a solution or melted. In this case, the electrolytes are potassium iodide, nickel sulfate, and magnesium chloride.

Let's break down the electrolysis of each solution and identify the products formed:

1. Electrolysis of Potassium Iodide (KI):
During electrolysis, the positive ions move toward the negative electrode (cathode), known as reduction, while the negative ions migrate toward the positive electrode (anode), known as oxidation.

At the cathode: Iodide ions (I-) will gain electrons and will be reduced to form iodine (I2) gas.
At the anode: Water molecules (H2O) will undergo oxidation and produce oxygen (O2) gas, along with the liberation of hydrogen (H2) gas.

Therefore, the products of electrolysis of potassium iodide solution are iodine gas (I2) at the cathode and oxygen gas (O2) and hydrogen gas (H2) at the anode.

2. Electrolysis of Nickel Sulphate (NiSO4):
The electrolysis of nickel sulfate involves the migration of positive nickel ions (Ni2+) and negative sulfate ions (SO4^2-) toward the respective electrodes.

At the cathode: Nickel ions (Ni2+) gain electrons and are reduced to form a solid nickel deposit.
At the anode: Sulfate ions (SO4^2-) undergo oxidation and release oxygen gas (O2).

As a result, the products of electrolysis of nickel sulfate solution are a deposition of nickel metal at the cathode and the liberation of oxygen gas (O2) at the anode.

3. Electrolysis of Magnesium Chloride (MgCl2):
During electrolysis of magnesium chloride, magnesium ions (Mg^2+) and chloride ions (Cl-) move toward the electrodes.

At the cathode: Magnesium ions (Mg^2+) gain electrons and are reduced to form a solid magnesium deposit.
At the anode: Chloride ions (Cl-) undergo oxidation and form chlorine gas (Cl2).

Thus, the products of electrolysis of magnesium chloride solution are a deposition of magnesium metal at the cathode and the liberation of chlorine gas (Cl2) at the anode.

In summary, the electrolysis products for each solution are as follows:

- Potassium iodide solution: Iodine gas (I2) at the cathode, and oxygen gas (O2) and hydrogen gas (H2) at the anode.
- Nickel sulfate solution: Nickel metal deposition at the cathode and oxygen gas (O2) at the anode.
- Magnesium chloride solution: Magnesium metal deposition at the cathode and chlorine gas (Cl2) at the anode.