Respuesta :
Question:
Options
A. The burning splint was extinguished because of a lack of CO2 in the
test tube.
B. The burning splint was extinguished because of a lack of H2O vapor.
C. Decomposition produced CO2 and H2O.
D. Combustion produced O2 and H2O
Answer:
C. The decomposition produced COâ‚‚ and Hâ‚‚O
Explanation:
Sodium hydrogen carbonate NaHCO₃, also known as baking soda or sodium bicarbonate which is a white crystalline solid that appears as a fine powder, decomposes when heated above 80 °C to form sodium carbonate, water and carbon dioxide as follows;
2NaHCO₃(s) → Na₂CO₃ (s) + H₂O(g) + CO₂(g)
At 400 °C, Na₂CO₃ decomposes further to form more carbon dioxide as follows
Na₂CO₃(s) → Na₂O (s) + CO₂ (g).
The student concluded after conducting the experiment is:
The decomposition produced COâ‚‚ and Hâ‚‚O.
Process for decomposition of COâ‚‚ and Hâ‚‚O:
Sodium hydrogen carbonate NaHCO₃, also known as baking soda or sodium bicarbonate.
It is a white crystalline solid that appears as a fine powder, decomposes when heated above 80 °C to form sodium carbonate, CO₂ and H₂O.
The chemical reaction is as follows:
2NaHCO₃(s) → Na₂CO₃ (s) + H₂O(g) + CO₂(g)
At 400 °C, Na₂CO₃ decomposes further to form more carbon dioxide as follows
Na₂CO₃(s) → Na₂O (s) + CO₂ (g).
Find more information about Decomposition here:
brainly.com/question/25843544
