what is the mood at the beginning of act two? why?

Act two starts off as a civil, if awkward conversation between husband and wife, that soon spirals into an argument and full expressions of bitterness and mistrust. However, we get to see a bit more of how the everyday functioning of their household works, and them at least trying to patch things up at the beginning. So the setting in act two at least starts off not being quite as dramatic; it is more personal and intimate. THe stress of adultery and the witch trials hangs in the air. There is a sense of mistrust, betrayal and secrets yet to be revealed.

It simply spirals into an argument and expressions of bitterness and mistrust.