The absorption of CO₂ in KOH solution during combustion analysis is a:
Correct answer: A. Chemical change
- A. Chemical change
- B. Physical change
- C. Neither chemical nor physical change
- D. Physical absorption of CO₂ in Mg(ClO₄)₂
Explanation
This is a chemical change because a reaction occurs where carbon dioxide (an acidic oxide) reacts with potassium hydroxide (a base) to form new compounds, potassium carbonate and water.
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