Calculate the PH at the Equivalence Point for the Titration

question 123

Multiple Choice

Calculate the pH at the equivalence point for the titration of 50.0 mL of 0.20 M NH₃ with 0.20 M HCl. [Kb(NH₃) = 1.8 × 10^-5]

• A)2.87
• B)4.98
• C)5.13
• D)7.00
• E)11.13

---

Definitions:

Quasi-experimental Study

A research method that examines the effects of an intervention or treatment without the use of random assignment.

Experimental Control

The practice of minimizing variables other than the independent variable in an experiment to ensure that the outcome is directly related to the variable being tested.

Independent Variable

In an experimental setting, the variable that is manipulated by the researcher to observe its effect on the dependent variable.

Double-masked Design

A study design in which neither the participants nor the researchers know who belongs to the control group and who belongs to the experimental group, minimizing bias.