After Mixing an Excess PbCl₂ with a Fixed Amount of Water,it

question 77

Multiple Choice

After mixing an excess PbCl₂ with a fixed amount of water,it is found that the equilibrium concentration of Pb²⁺ is 1.6 × 10^-2 M.What is K_sp for PbCl₂?

• A)4.0 × 10^-6
• B)1.6 × 10^-5
• C)2.5 × 10^-4
• D)4.8 × 10^-2
• E)1.0 × 10^-6

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Definitions:

Sodium Channels

Sodium channels are proteins in cell membranes that allow sodium ions to flow into or out of cells, playing vital roles in the generation and transmission of electrical signals in neurons and muscle cells.

Hyperpolarization

An increase in a cell's membrane potential, making the cell more negative and less likely to fire an action potential.

Voltage Fluctuations

Variations in the electrical potential difference that can affect the performance of electronic circuits and power systems.

Cell Membrane

The cell membrane is a biological membrane that separates the interior of all cells from the outside environment, controlling the movement of substances in and out of cells.