The acid catalysed hydrolysis of an compound $\ce{A}$ at $\pu{303K}$: $$\ce {A ->[$k$] B}$$ has a half-life of $\pu{100 min}$ when carried out in a buffer solution of $\mathrm{pH=5}$ and $\pu{10 min}$ when carried out at $\mathrm{pH=4}$. Both the times the half-life are independent of the initia...

Explain why diethyl ether does not have a UV spectrum, even though it has lone-pair electrons. My particular doubt is that can we say that pi star molecular orbital doesnt exist because there are no pi bonded electrons in the compound?