A 250-ML Sample of 0

question 59

Multiple Choice

A 25.0-mL sample of 0.10 M C₂H₅NH₂ (ethylamine) is titrated with 0.15 M HCl. What is the pH of the solution after 9.00 mL of acid have been added to the amine? [K_b(C₂H₅NH₂) = 6.5 × 10^-4]

• A) 11.08
• B) 10.74
• C) 10.81
• D) 10.55
• E) 10.49

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Definitions:

Boolean Equation

A mathematical expression that uses Boolean algebra, involving variables that take values from a two-element set (usually 0 and 1) and are combined using logical operations.

Ladder Logic

A graphical programming language resembling the schematic diagrams of relay logic hardware, used to program PLCs.

Logic Represented

The symbolic depiction of logical operations and relationships, typically used in the development and analysis of algorithms, circuits, and programming.

Boolean Equation

A mathematical expression that involves Boolean algebra and uses binary variables and logical operations, commonly used in computer science and digital electronics.