on heating yellow colour pbo changes to red colour then pbo is dash type of change
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on heating yellow colour pbo changes to red colour then pbo is dash type of change
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Answer:
if yellow colour pbo is heated it changes to red colour then pbo is a chemical change
Answer:
This is a very interesting question! Lead(ii) oxide is PbO and it is generally colored red before heating. ... However, by heating the red PbO, we can create yellow PbO, which is a meta-stable compound
Explanation:
Lead(ii) oxide is PbO and it is generally colored red before heating. The red PbO is a stable compound. However, by heating the red PbO, we can create yellow PbO, which is a meta-stable compound.
PbO (red) +1.6kJ/mol = PbO (yellow) [T ~ 500C]
This is because the enthalpies of formation are so close, -219.1kJ/mol for the red and -217.5kJ/mol for the yellow.