Determine the volume of a 0.1 M solution of HCl, necessary to titrate 20 mL of a 0.5 M solution of NH3. The value of Kb is 1.8 x 10-5.

Answer 1

20 mL NH3 x 0.5 M NH3 = mL HCl x 0.1 M HCl. Solve for mL HCl.