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Complete the sentence by putting a cross (✗) in the box next to your answer - Edexcel - GCSE Chemistry - Question 5 - 2012 - Paper 1
Question 5
Complete the sentence by putting a cross (✗) in the box next to your answer. When dilute hydrochloric acid reacts with copper oxide one of the products is A copper ... show full transcript
Worked Solution & Example Answer:Complete the sentence by putting a cross (✗) in the box next to your answer - Edexcel - GCSE Chemistry - Question 5 - 2012 - Paper 1
Step 1
Step 2
Explain what is meant by electrolysis.
Answer
Electrolysis is a chemical process that uses an electric current to drive a non-spontaneous reaction. In electrolysis, an electrolyte solution is decomposed into its constituent ions at the electrodes, allowing for the production of substances like chlorine gas and hydrogen.
Step 3
Step 4
Explain how the presence of sulfur in fossil fuels can lead to damage to the environment and how the amount of damage can be reduced.
Answer
The burning of fossil fuels containing sulfur produces sulfur dioxide, which can lead to acid rain. Acid rain can cause the acidification of lakes, harm aquatic life, damage forests, and erode buildings and monuments. To reduce this damage, we can:
- Use calcium carbonate from limestone to neutralize the acidity of rain.
- Convert waste gases from power stations to reduce sulfur emissions.
- Implement cleaner energy sources that contain low or no sulfur.