You Have 500

question 86

Multiple Choice

You have 500.0 mL of a buffer solution containing 0.30 M acetic acid (CH₃COOH) and 0.20 M sodium acetate (CH₃COONa) . What will the pH of this solution be after the addition of 20.0 mL of 1.00 M NaOH solution [K_a = 1.8 * 10^-5]

• A) 4.65
• B) 4.71
• C) 4.56
• D) 4.84
• E) 5.07

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Definitions:

New Variable

The process of declaring a memory space for storing values, with a specific type in programming.

Pointer Variable

A pointer variable is a variable that stores the memory address of another variable, enabling direct memory access and manipulation in programming.

Store Address

Relating to storing or saving a memory address in a programming context, often used in variables to reference locations.

Variable

An element of coding that represents a storage location paired with an associated symbolic name, which contains some known or unknown quantity or information, also called its value.