text: are you good at chem 2 problems?? ok so this problem is driving me crazy.  if you add 2.22 g of sodium azide (nan3 an ionic salt) to the solution of 0.734 g nh3(hydrogen azide) in 400 ml of water.  what will the new ph be? (assume no volume change).  please show work, so i can figure this out :) thanks!! here's a hint:  henderson-hasselbach equation.