Whydoes azo coupling at ortho position of 1-naphthol occur if para position is occupied?

And why does diazonium coupling ortho position or para position of phenol?

Hi, asking twice won't get your question answered faster, I deleted the old one because this one had an extra question in it.

Sorry I cannot answer your question, my chemistry knowledge doesn't stretch this far. Have you tired looking through your notes, tex book or maybe even wikipedia (http://www.wikipedia.org)?