A 500-ML Sample of a 0

question 26

Multiple Choice

A 50.0-mL sample of a 0.100 M solution of a weak acid HA has an equilibrium pH of 4.00. After 1.0 × 10^-3mol of a substance X is added to the solution, it is observed that the pH of the solution increases. What might be true about substance X? I. X might be a strong base that partially neutralized some weak acid.
II) X might be a strong acid that made the solution more acidic.
III) X might be a soluble ionic compound containing the anion A^-.

• A) I only
• B) II only
• C) III only
• D) I or III
• E) II or III

---

Definitions:

Truncated

Refers to shortening something by cutting off part of it, often used in the context of limiting the precision of a numerical value.

Boolean Type

A data type in programming that has two possible values: true or false, used for logical operations and control flow.

Explicitly Converted

The process of converting a data type into another using specific commands or methods in a programming language.

Unicode Character Set

A universal character set that defines a unique code for every character, regardless of the platform, program, or language, facilitating text processing in multiple languages.