The Base-Dissociation Constant of Ethylamine $\mathrm { C } _ { 2 }$

question 28

Multiple Choice

The base-dissociation constant of ethylamine ( $\mathrm { C } _ { 2 }$ $\mathrm { H } _ { 5 }$ $\mathrm { NH } _ { 2 }$ ) is 6.4 × $10 ^ { - 4 }$ at 25.0 °C.The [ $\mathrm { H } ^ { + }$ ] in a 1.7 × 10^-2 $\mathrm { mol } \mathrm { L } ^ { - 1 }$ solution of ethylamine is ________ mol L^-1.

• A)1.1 × 10^-5
• B)11.48
• C)3.3 × 10^-3
• D)3.0 × 10^-3
• E)3.3 × 10^-12

---

Definitions:

Clinical Depression

A condition of mental well-being in which one consistently experiences a low mood or a disinterest in daily activities, leading to considerable disruption in daily living.

Anxiety

A mental health disorder characterized by feelings of worry, anxiety, or fear that are strong enough to interfere with one's daily activities.

Anger

A strong feeling of displeasure and usually of antagonism, often arising from a perceived wrong or injustice.

Breast Cancer

A type of cancer that develops from breast tissue, characterized by the formation of malignant tumors.