Tropone is an unusually basic carbonyl (C=O) compound. When it is treated with one equivalent of the strong acid HBF4, it forms A, C7H7OBF4.
Draw the structure of A as its most stable resonance structure.

In vapor-liquid equilibrium in a binary mixture, both components are generally present in both phases. how many degrees of freedom are there for such a system? the reaction between nitrogen and hydrogen to form ammonia occurs in the gas phase. how many degrees of freedom are there for this system? steam and coal react at high temperatures to form hydrogen, carbon monoxide, carbon dioxide, and methane. the following reactions have been suggested as being involved in the chemical transformation: