25.0 mL of a 0.100 M solution of NH₃ is titrated with 0.150M HCl. After 10.0 mL of the HCl has been added, the resultant solution is:

Question

Quizplus · Accepted Answer

The given solution is basic due to the presence of NH₃, which is a base. The equivalence point is reached when the moles of acid equal the moles of base. Before the equivalence point, there are more moles of base than acid, so the solution remains basic. The moles of NH₃ initially are 0.0025 mol (25.0 mL * 0.100 M), and the moles of HCl added are 0.0015 mol (10.0 mL * 0.150 M), indicating that the solution is still before the equivalence point because not enough HCl has been added to neutralize all the base.

250 ML of a 0