Electrolysis of Aqueous Solutions

Question 1

What substance is it easier to discharge ions from than solute?

Answer 1

Water

Question 2

If H+ ions and metal ions are present at the cathode what gas will be produced?

Answer 2

Hydrogen

Question 3

If OH- and halide ions are present at the anode what gas will be formed?

Answer 3

Oxygen

Question 4

How would you test for chlorine from Electrolysis?

Answer 4

Get damp litmus paper if chlorine is present it will bleach it white

Question 5

How would you test for Hydrogen from Electrolysis?

Answer 5

Hold a flame to the end of a test tube if it makes a pop[ Hydrogen is present

Question 6

How would you test for Oxygen from Electrolysis?

Answer 6

If Oxygen is present it will relight a glowing splint

Question 7

What do half equations show?

Answer 7

The reactions at the electrodes

Question 8

What is an important factor you need to know when combining half equations?

Answer 8

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