A 100 L Buffer Solution Is 0

question 35

Multiple Choice

A 1.00 L buffer solution is 0.150 mol L^-1 in C₆H₅COOH and 0.250 mol L^-1 in C₆H₅COOLi. Calculate the pH of the solution after the addition of 100.0 mL of 1.00 mol L^-1 HCl. The K_a for HC₇H₅O₂ is 6.5 × 10^-5.

• A) 4.19
• B) 5.03
• C) 4.41
• D) 3.34
• E) 3.97

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Definitions:

Mitochondria

Organelles found in most cells, responsible for producing energy by converting food into adenosine triphosphate (ATP) through the process of oxidative phosphorylation.

Sarcoplasmic Reticulum

A structure found within muscle cells that stores and releases calcium ions, playing a key role in muscle contraction.

Myofibrils

The basic rod-like units of a muscle cell that are essential for muscle contraction and movement.

Strength-Training Tools

Equipment or accessories used to enhance muscle strength and endurance, such as free weights, resistance bands, or weight machines.