A series of dialkyl ethers was allowed to react with excess hydrogen bromide, with the following results.

Question:

A series of dialkyl ethers was allowed to react with excess hydrogen bromide, with the following results. Identify the ether in each case.
(a) One ether gave a mixture of bromocyclopentane and 1-bromobutane.
(b) Another ether gave only benzyl bromide.
(c) A third ether gave one mole of 1, 5-dibromopentane per mole of ether.