What is the action of atmospheric oxygen on ethers?

How will you prepare diethyl ether by dehydration of alcohols? What are the limitations to prepare ether by this method ? What is the action of following on diethyl ether? PCl_(5)

How will you prepare diethyl ether by dehydration of alcohols? What are the limitations to prepare ether by this method ? What is the action of following on diethyl ether? dil. H_2SO_4

Name the first oxygenic photoautotrophic organism. What was the effect of evolved oxygen on atmospheric gases of reducing atmosphere of that period ?

Oxygen atom in ether is