I'm having trouble with identifying whether a solution is acidic, basic or neutral. I have no idea what steps I should take. Are there calculations involved, or is it just an assumption based on logic?
I've included a few examples from my textbook, if someone would like to help me with any of these.
1. (NH4)3PO4(aq)
2. (NH4)2SO4(aq)
3. MgO(aq)