What Is K_b for the Following Equilibrium? K_a for HNO₂

question 37

Multiple Choice

What is K_b for the following equilibrium? K_a for HNO₂ is 5.0 × 10^-4.
NO₂^-(aq) + H₂O(l)
HNO₂(aq) + OH^-(aq)

• A)2.0 × 10^-4
• B)5.0 × 10^-4
• C)5.0 × 10¹⁰
• D)5.0 × 10¹⁸
• E)2.0 × 10^-11

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Definitions:

Endomysium

A thin layer of connective tissue that surrounds each individual muscle fiber, providing support and maintaining the spatial organization of muscle fibers.

Myofilaments

The filamentous components of muscles, comprising mainly of actin (thin filaments) and myosin (thick filaments), essential for muscle contraction.

Sarcoplasmic Reticulum

A specialized type of smooth endoplasmic reticulum found in muscle fibers, critical in regulating calcium ions and thus muscle contraction.

T-tubules

Tubular extensions of the cell membrane in muscle cells, transmitting electrical signals from the surface to the interior of the muscle fiber.