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Colour of PbO is yellow when cold, what ...

Colour of PbO is yellow when cold, what is its colour when hot

A

Brown

B

Black

C

Green

D

Purple

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Understanding the Question**: The question asks about the color change of lead(II) oxide (PbO) when it transitions from a cold state to a hot state. 2. **Identifying the Cold Color**: It is given that PbO is yellow when it is cold. 3. **Identifying the Hot Color**: The video transcript states that PbO changes color when heated. Specifically, it mentions that PbO is brown when hot. 4. **Reasoning Behind the Color Change**: The color change from yellow to brown is attributed to a change in the enthalpy of formation of PbO. The enthalpy values provided indicate that the formation of PbO at different temperatures can lead to different colors due to changes in the energy states of the material. 5. **Conclusion**: Therefore, the color of PbO when hot is brown. ### Final Answer: The color of PbO when hot is brown.
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