Electrolysis of Aqeous Solutions

Question 1

What else would there be in the aqueous solution

Answer 1

Apart from the Ions from the ionic compound, there will be hydrogen ions and hydroxide ions

Question 2

What happens at the cathode if hydrogen ions and hydroxide ions are present

Answer 2

Hydrogen will be produced if the metal forms an elemental metal that is more reactive than hydrogen
If the metal forms an elemental metal that is less reactive than hydrogen, a solid layer of the pure metal will be produced

Question 3

What happens at the anode if hydroxide ions and halide ions are present

Answer 3

Molecules of chlorine hormone and iodine will be formed, if no halide ions are present then the OH- ions are discharged and oxygen will be formed

Question 4

What side do you draw the anode when drawing the experiment

Answer 4

In the ride where the dc power supply is and on the side as the longer line of the dc power symbol

Question 5

What are half equations used for

Answer 5

Showing reactions at electrodes

Question 6

What do you have to remember when combining half equations

Answer 6

The number of electrons needs to be the same for each half equation

Question 7

What is the half equation for the anode when the halide isn’t present in the aqueous solutions

Answer 7

4OH- ——- O2 + 2H2O + 4 E-