You Have Solutions of 0

question 72

Multiple Choice

You have solutions of 0.200 M HNO₂ and 0.200 M KNO₂ (K_a for HNO₂ = 4.00 × 10^-4) . A buffer of pH 3.000 is needed. What volumes of HNO₂ and KNO₂ are required to make 1 L of buffered solution?

• A) 286 mL HNO₂; 714 mL KNO₂
• B) 714 mL HNO₂; 286 mL KNO₂
• C) 413 mL HNO₂; 587 mL KNO₂
• D) 500 mL of each
• E) 587 mL HNO₂; 413 mL KNO₂

---

Definitions:

Unconscious Processes

Psychological activities that occur without conscious awareness or intention, influencing thoughts, feelings, and behaviors.

Decision-Making

The process of making choices by identifying a decision, gathering information, and assessing alternative resolutions.

Conscious Processing

Involves deliberate, aware mental activities where individuals are fully aware of their thoughts, feelings, and actions.

Unconscious Processing

Mental processes not directly accessible to consciousness but that influence judgments, feelings, or behavior.