IB Chemistry R3.2.12 Standard Electrode Potentials Notes

The Hydrogen Half-Cell: Definition and Setup

The hydrogen half-cell is a simple yet essential electrochemical system.

It is represented by the following half-equation:

$$
\text{H}^+ (aq) + e^- \leftrightarrow \frac{1}{2} \text{H}_2 (g)
$$

Key Components of the Hydrogen Half-Cell

Hydrogen Ions ($\text{H}^+$):

These are present in an aqueous solution, typically at a concentration of $1.00 \, \text{mol dm}^{-3}$ to meet standard conditions.

Hydrogen Gas ($\text{H}_2$):

Pure hydrogen gas is bubbled through the solution at a pressure of $1.00 \, \text{bar}$.

Platinum Electrode:

A platinum electrode, often coated with platinum black, serves as an inert surface for the redox reaction.

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IB Chemistry R3.2.12 Standard Electrode Potentials Notes

The Hydrogen Half-Cell: Definition and Setup

Key Components of the Hydrogen Half-Cell

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The Hydrogen Half-Cell: Definition and Setup

Key Components of the Hydrogen Half-Cell

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Structure 1. Models of the particulate nature of matter5 subtopics

Structure 2. Models of bonding and structure4 subtopics

Structure 3. Classification of matter2 subtopics

Reactivity 1. What drives chemical reactions?4 subtopics

Reactivity 2. How much, how fast and how far?3 subtopics

Reactivity 3. What are the mechanisms of chemical change?4 subtopics

IB Chemistry R3.2.12 Standard Electrode Potentials Notes

Structure 1. Models of the particulate nature of matter5 subtopics

Structure 2. Models of bonding and structure4 subtopics

Structure 3. Classification of matter2 subtopics

Reactivity 1. What drives chemical reactions?4 subtopics

Reactivity 2. How much, how fast and how far?3 subtopics

Reactivity 3. What are the mechanisms of chemical change?4 subtopics

The Hydrogen Half-Cell: Definition and Setup

Key Components of the Hydrogen Half-Cell

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The Hydrogen Half-Cell: Definition and Setup

Key Components of the Hydrogen Half-Cell

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