What is the pH of a bufter solution, prepared by mixing 30.0 mL of 3.00 M ammonia, NH₃ (Kᵦ=1.80 x 10) and 5.35 g ammonium chloride, NH4CI (53.5 g/mol), and then diluting to 500 mL with distilled water? K= 1.0 x 10⁻¹⁴ a. 10.00 b. 9,300 c. 9.21 d. 9.255