Flashcards : Electrochemical Redox Reactions — 24 cartes

Pb²⁺ reduced at cathode; water oxidized at anode.

Contains Pb²⁺ and NO₃⁻ ions.

Metallic lead (Pb).

Oxygen gas (O₂).

Approximately equal to θ (radians).

Approximately 1 - θ²/2.

Decreases exponentially over time.

Time for activity to halve.

Becquerels (Bq), decays per second.

u_C(t) = A(1 - e^(-t/τ)).

τ = R×C, time to reach 63.2% voltage.

Decreases over time due to resistance.

External voltage proportional to current.

F = q(v × B).

Radius depends on charge, mass, velocity, magnetic field.

R ∝ m/(qB) for same velocity.

E ≈ mgh + (1/2)Iω².

From energy conservation, where kinetic energy is zero.

Potential energy maximum at amplitude; kinetic maximum at equilibrium.

pH change is steep; indicator chosen accordingly.

Range includes pH at equivalence point.

Compare trajectory radii; relates to mass/charge ratio.

sin θ ≈ θ; cos θ ≈ 1 - θ²/2.

Helium nucleus (4He) and neutron.