4 mole of NH_(4) OH and 1 mole of H_(2) SO_(4) are mixed and dilute to 1 lit solution . The pK_(b) of NH_(4) OH is 4.8 . The pH of solution is

4 mole of NH_(4) OH and 1 mole of H_(2) SO_(4) are mixed and dilute to

1.	4 mole of NH_(4) OH and 1 mole of H_(2) SO_(4) are mixed and dilute to 1 lit solution . The pK_(b) of NH_(4) OH is 4.8 . The pH of solution is
Answer» `4.8` `9.2` `9.5` `8.9` ANSWER :B