This is my second attempt to get help , I read the info that the other person suggested but some how it's not sinking in and I think I'm making it to complicated. If someone would work out a couple of problems for me maybe I con understand. I promise it's not homework as this id independent study so I can get into the class. Any way calculate the ph of 5.0g of HBr in a 100 ml aqueous solution,and 2.0 g of NaOH- in a 50 ml aqueous solution. Please if you can show work. 2nd , are these acid ,basic ,or neutral? A).10 M HCl( I say ,acid) B) .20 m NaOH (I say,base) C) 6.8 x 10-7 m H3O+ (I say, Acid) D) H+ = .00056 m (I say acid) I really need help I've worked out of 3 o-chem books and I'm lost .Thanx ,Robert