Answer to Question #142591 in Electric Circuits for Haggy

Question

Choose all correct answers and explain your reason for each
The standard heats of formation of the hydrides of group VII elements are HF(-271),
HCl(-92), HBr(-36) These figures indicate that (1) HF is the least stable of them (2) HBr is
the most stable of them (3) HF is the most stable of them

Answer 1

A more negative standard heats of formation represent a more stable molecule. Thus, the most stable is HF.