Arrange the Following Amines in Order of Decreasing Basicity (Most

question 61

Multiple Choice

Arrange the following amines in order of decreasing basicity (most to least) in aqueous solution: NH₃
CH₃CH₂CH₂NH₂
(CH₃CH₂CH₂) ₂NH
(CH₃CH₂CH₂) ₃N
I
II
III
IV

• A) IV > III > II > I
• B) III > II > IV > I
• C) I > IV > II > III
• D) II > III > I > IV
• E) III > I > II > IV

---

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.