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Ethers should never be evaporated to dry...

Ethers should never be evaporated to dryness because

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When ethers are heated to dryness.
(i) They form peroxide by the action of air or oxygen.
(ii) Ether oxgyen is capable of forming a co-ordinate covalent bond witih electron deficient species.
`C_(2)H_(5)-O -C_(2)H_(5) overset((O))to underset("diethyl peroxide") ((C_(2)H_(5))_(2)) O_(2)`
(iii) These peroxides are unstable and decomposes violently with explosion on heating. Hence, ether should not be heated to dryness.
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