When iron wool reacts with oxygen from the air, the iron corrodes and iron oxide is formed - Edexcel - GCSE Chemistry - Question 7 - 2022 - Paper 1
Question 7
When iron wool reacts with oxygen from the air, the iron corrodes and iron oxide is formed.
What happens to the iron in this reaction?
The correct option is: C) it ... show full transcript
Worked Solution & Example Answer:When iron wool reacts with oxygen from the air, the iron corrodes and iron oxide is formed - Edexcel - GCSE Chemistry - Question 7 - 2022 - Paper 1
Step 1
C) it is oxidised.
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Answer
Iron undergoes an oxidation reaction when it reacts with oxygen, resulting in the formation of iron oxide. This is indicative of the process of oxidation, which is the loss of electrons.
Step 2
volume of gas in Figure 13 in cm³
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Answer
To find the volume of gas remaining in the measuring cylinder after the reaction, you would measure the new water level. In practice, if the volume of air reduces by approximately 20 cm³, the answer here would be 30 cm³.
