Question
When C _ 2 H _ 2 , CH _ 4 and C _ 2 H _ 4 pass through a test tube which has ammonical Cu _ 2 Cl _ 2 , find out which gas comes out unaffected from test tube?
BITSAT
Chemistry
Practical Chemistry
2021
BITSAT 2021
BITSAT Chemistry Question (2021) — Solution
Options
- A. C _ 2 H _ 2 and CH _ 4
- B. C _ 2 H _ 2 and C _ 2 H _ 4
- C. C _ 2 H _ 4 and CH _ 4
- D. C _ 2 H _ 2
Answer
C. C _ 2 H _ 4 and CH _ 4
Step-by-step solution
C _ 2 H _ 2 forms copper acetylide with ammonical Cu _ 2 Cl _ 2 array l Cu _ 2 Cl _ 2 +2 NH _ 4 OH Cu _ 2 O + H _ 2 O +2 NH _ 4 Cl \\ Cu _ 2 O + C _ 2 H _ 2 (copper acetylide) Cu _ 2 C _ 2 + H _ 2 O array
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