A Buffer Is Prepared by Adding 150 ML of 1

question 22

Multiple Choice

A buffer is prepared by adding 150 mL of 1.0 M NaOH to 250 mL of 1.0 M NaH₂PO₄. How many moles of HCl must be added to this buffer solution to change the pH by 0.18 units? If necessary, assume the total volume remains unchanged at 400 mL.

• A)0.025 mol HCl
• B)0.063 mol HCl
• C)0.082 mol HCl
• D)0.50 mol HCl
• E)1.0 mol HCl

Understand the effectiveness of various therapeutic approaches in treating mental health issues.

Comprehend the relationship between personality traits and vulnerability to substance use disorders.

Distinguish between different types of delusions and hallucinations in schizophrenia.

Recognize the diagnostic criteria and the consequences of pathological gambling.

---

Definitions:

Organic Product

A compound or material derived from living organisms or the result of organic reactions.

Structure

The three-dimensional arrangement of atoms within a molecule, which determines its chemical behavior.

Polypropylene

A thermoplastic polymer made through the polymerization of propylene, used in packaging, textiles, and various types of containers.

Carbonate Ester

An organic compound formed by the reaction of a carbonate ion with an alcohol, often used as solvents and intermediates in chemical synthesis.