The Acid Dissociation Constant for a Weak Acid HX at 25°C

question 10

Multiple Choice

The acid dissociation constant for a weak acid HX at 25°C is 4.3 10^-8.Calculate the free energy of formation for X^-(aq) at 25°C.The standard free energies of HX(aq) and H⁺(aq) at 25°C are -208.3 kJ/mol and 0,respectively.

• A)-205 kJ/mol
• B)250 kJ/mol
• C)0
• D)-166 kJ/mol
• E)-250 kJ/mol

---

Definitions:

Interruption

The act of stopping or hindering a process or activity temporarily or permanently, causing a break in continuity.

Silent Patient

A patient who is either unwilling or unable to speak during therapy sessions, often posing challenges in diagnosis and treatment.

Withdrawn

A behavior characterized by a lack of interaction with other people, often due to depression, anxiety, or other mental health issues.

Suspicious

Characterized by or having a tendency to suspect, distrust, or question motives, often without evidence or justification.