Hydrochloric acid can be electrolysed using this apparatus - Edexcel - GCSE Chemistry - Question 1 - 2012 - Paper 1
Question 1
Hydrochloric acid can be electrolysed using this apparatus.
(i) State the form of energy used to carry out the electrolysis.
(ii) Name the gas formed at the anode.... show full transcript
Worked Solution & Example Answer:Hydrochloric acid can be electrolysed using this apparatus - Edexcel - GCSE Chemistry - Question 1 - 2012 - Paper 1
Step 1
State the form of energy used to carry out the electrolysis.
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Answer
The form of energy used to carry out the electrolysis is electrical energy or direct current.
Step 2
Name the gas formed at the anode.
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Answer
The gas formed at the anode is hydrogen (H₂).
Step 3
Describe a test for the gas formed at the anode.
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Answer
To test for hydrogen, you can use a damp litmus paper. When hydrogen is present, the litmus paper turns bleached (white).
