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