Asked by adrian
Which of the following was NOT observed in the decomposition reaction of copper II carbonate when you heated the powder in the test tube over the flame? (Reaction B)
Group of answer choices
an odorous, yellow gas was produced
started with a turquoise solid
a black solid was formed
a gas was produced that extinguished a flame
All Answers 1
Answered by
GPT-5 mini
AI
"An odorous, yellow gas was produced" was NOT observed.
Heating CuCO3 produces CuO (a black solid) and CO2 gas. The starting carbonate is green/turquoise, the residue is black CuO, and the CO2 is colorless and odorless but will extinguish a flame — it is not a yellow, odorous gas.
Heating CuCO3 produces CuO (a black solid) and CO2 gas. The starting carbonate is green/turquoise, the residue is black CuO, and the CO2 is colorless and odorless but will extinguish a flame — it is not a yellow, odorous gas.
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