Compound a has the formula c9h19cl. b is a c9h19br compound. a and b undergo base-promoted e2 elimination to give the same alkene c as the major product as well as different minor products. c reacts with one molar equivalent of hydrogen in the presence of a palladium catalyst to form 2,6-dimethylheptane. addition of hcl to c yields a as the major product. propose structures for a and
b.
