Figure 1 shows the apparatus that can be used to electrolyse sodium sulfate solution using inert electrodes - Edexcel - GCSE Chemistry Combined Science - Question 1 - 2020 - Paper 1
Question 1
Figure 1 shows the apparatus that can be used to electrolyse sodium sulfate solution using inert electrodes.
Gas X
Sodium sulfate solution
Hydrogen
6V d.c. suppl... show full transcript
Worked Solution & Example Answer:Figure 1 shows the apparatus that can be used to electrolyse sodium sulfate solution using inert electrodes - Edexcel - GCSE Chemistry Combined Science - Question 1 - 2020 - Paper 1
Step 1
Describe the test to show the gas is hydrogen.
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Answer
To test for hydrogen, apply a lit splint to the gas. If it is hydrogen, the gas will produce a characteristic 'pop' sound as it burns.
Step 2
What is the name of gas X that forms at the positive electrode?
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Answer
B - Oxygen
Step 3
State what is meant by the term electrolysis.
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Answer
Electrolysis is the process by which electrical energy is used to induce a chemical change, typically the decomposition of a compound into its constituent elements, through the movement of ions in an electrolyte.
