The explosive formed when ether is exposed to air for some time is
Slow autoxidation at the alpha-carbon over time produces this unstable compound.
Which compound gives phenol and methyl iodide on heating with HI?
The aryl-oxygen bond stays intact; the alkyl-oxygen bond breaks.
Ethers are
Ethers are generally unreactive toward litmus.
Which carbon is designated as an alpha-carbon in an ether?
The alpha position is defined relative to the functional group (oxygen here).
Ethers can be freed from peroxide by shaking with
A reducing agent (Fe2+) is needed to destroy the peroxide.
Diethyl ether, on heating with an excess of concentrated HI, gives 2 moles of
Excess HI cleaves both C-O bonds of the symmetrical ether.
Which statement best distinguishes cold concentrated H2SO4 from hot concentrated H2SO4 in the reaction with ethers?
Think of it as mild protonation (cold) versus a more forcing reaction (hot).
When ethoxyethane is exposed to air and light for a prolonged period, it can form:
This is the same hazard mentioned regarding storage of ethers.
In an oxonium salt, oxygen has
Oxygen forms a third bond (e.g., to H+) becoming trivalent and positively charged.
Which statement best explains why ethers behave as Lewis bases?
A Lewis base donates an electron pair.
In chlorination of ethoxyethane in the absence of sunlight, substitution occurs preferentially at the:
In the dark (ionic mechanism), oxygen's lone pair stabilizes the transition state at this position.
In CH3CH2-O-CH2CH3, the number of alpha-carbons is:
Count the carbons directly bonded to the oxygen on each side.
When diethyl ether is treated with excess chlorine in the presence of sunlight, the product formed is
Excess chlorine under sunlight (free-radical conditions) replaces all hydrogen atoms.
The ether that undergoes electrophilic substitution is
Look for the option containing an aromatic ring.
Which of the following does not react with sodium metal?
Sodium reacts with the -OH group; one of these options has no -OH.
