A hot silver foil is tarnished when exposed to ozone. Why ? – InterviewSolution

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1.	A hot silver foil is tarnished when exposed to ozone. Why ?
Answer» Solution :Silver METAL is oxidised by ozone to silver oxide. This oxide is REDUCES BACK to finely divided silver metal, which is black. `2AG + O_3 rarr Ag_2O + O_2` (oxidation) `Ag_2O + O_3 rarr 2 Ag + 2O_2` (reduction) These are called MUTUAL reduction reactions.

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