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A student placed a piece of metal P in a test tube containing excess dilute sulfuric acid - Edexcel - GCSE Chemistry Combined Science - Question 6 - 2018 - Paper 1
Question 6
A student placed a piece of metal P in a test tube containing excess dilute sulfuric acid. The student repeated this with three other metals, Q, R and S. All the pie... show full transcript
Worked Solution & Example Answer:A student placed a piece of metal P in a test tube containing excess dilute sulfuric acid - Edexcel - GCSE Chemistry Combined Science - Question 6 - 2018 - Paper 1
Step 1
Identify the Observations
Answer
Based on the observations recorded:
- Metal P produced bubbles very slowly and some metal remained, indicating low reactivity.
- Metal Q produced bubbles quickly and no metal remained, indicating higher reactivity than P.
- Metal R produced bubbles slowly with no metal remaining, suggesting it is less reactive than Q.
- Metal S produced bubbles very quickly and no metal remained, indicating it is the most reactive.
Step 2
Order the Metals by Reactivity
Answer
From the observations:
- P - least reactive (bubbles produced very slowly)
- R - second least reactive (bubbles produced slowly)
- Q - more reactive than R (bubbles produced quickly)
- S - most reactive (bubbles produced very quickly)
Final order from least reactive to most reactive is: P, R, Q, S.