Describe a method you could use to investigate the volume of hydrogen produced during the electrolysis of sodium chloride. Include a labelled diagram in your answer. __ (6 marks]

## Step 1: Firstly, let's understand the process of electrolysis of sodium chloride. Electrolysis is a process by which electrical energy is used to produce a chemical change. When an electric current is passed through sodium chloride, it breaks down to form sodium and chlorine gas. However, if the solution is aqueous, water is also broken down forming hydrogen and hydroxide ions. The overall reaction is:### ## Step 2: To investigate the volume of hydrogen produced during this process, we can use a simple setup involving a power source, two electrodes, a beaker containing the sodium chloride solution, and a gas collection tube. ## Step 3: The setup is as follows: Connect the power source to the two electrodes. Place the electrodes in the beaker containing the sodium chloride solution. Position the gas collection tube above the electrode where hydrogen will be produced (the negative electrode, or cathode). ## Step 4: Turn on the power source to start the electrolysis. Hydrogen gas will start to form at the cathode and will rise into the gas collection tube. ## Step 5: You can measure the volume of hydrogen produced by observing the level of water displacement in the gas collection tube. ## Step 6: Repeat the experiment with different concentrations of sodium chloride to see how it affects the volume of hydrogen produced.