Treatment of cycloheptatriene with one equivalent of bromine gave an oily dibromide that on heating in vacuum at 70° left tropylium bromide, c7h7br, as yellow crystals, melting point 198-200°. tropylium bromide is an unusual organic bromide, intrinsically colored and soluble in water but not in non-polar organic solvents like hexane. draw the structure of tropylium bromide.

Explanation:

The given properties of tropylium bromide imply that this should be an ionic compound. Let's see why and how:

Tropylium bromide is produced by removing a proton from the cycloheptatriene ring and producing a positively charged carbon. Its charge is balanced by the negatively charged bromide. Thus, we should draw a cycloheptatriene ring (ring with 7 carbons and 3 double bonds) with bromide anion adjacent to it to balance the carbon's positive charge. The image below illustrates this.

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.