I'm pretty sure the LaTeX added in this second revision is incorrect, but I am slightly wary of correcting it. Can anyone please confirm?

:: needs tags - chemistry.stackexchange.com/q/23787/5026 redox suffices

@GaurangTandon Yes, that mathjax was horrible.

@GaurangTandon The two answers which were no longer relevant were deleted. The existing answer is perfectly okay. So, the only thing that was needed was to flag that comment as no longer needed.