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For K-12 Students · Electrochem Cell

Electrochem Cell for a molecular collision

Built for k-12 students learning it in middle or high school. Watch the idea come alive with plain-language steps and everyday examples — perfect for projects and homework. Simulate a molecular collision live below — adjust the inputs and watch it respond, right in your browser.

Ph

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pH & pOH CalculatorLive

acids, bases, and the pH scale

3.0

acidic

0714

Controls

pH measures hydrogen-ion concentration on a logarithmic scale. Each unit is a 10× change — pH 3 is ten times more acidic than pH 4.

Presets

Concentration 10⁻ⁿ M (n)

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Data Inspector

pH3.00

pOH11.00

[H⁺]1.0e-3

[OH⁻]1.0e-11

Governing equation

pH = - lo g_{10} [H^{+}] = - lo g_{10} (1.0 e - 3) = 3.00

Reading this result: Acidic: [H⁺] of 1.0e-3 M outnumbers OH⁻, and because pH + pOH always sums to 14, the pOH here is 11.0.

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Reaction Kinetics

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Reaction KineticsLive

rate laws · Arrhenius temperature

Controls

Presets

Watch reactant concentration fall over time. The reaction order sets the curve shape; raising temperature speeds the rate constant, Arrhenius-style.

Rate constant k

Temperature factor

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Data Inspector

Order1

Effective k0.300

Arrheniusk = A·e^(−Ea/RT)

Governing equation

rate = k_{eff} [A]^{1} = 0.30 [A]^{1}

Reading this result: First-order: [A] decays exponentially with a constant half-life; raising temperature lifts k_eff to 0.30, steepening the curve Arrhenius-style.

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Frequently asked questions

Is this good for k-12 students?: Yes — this version of "Electrochem Cell for a molecular collision" is framed for k-12 students learning it in middle or high school. Watch the idea come alive with plain-language steps and everyday examples — perfect for projects and homework.
Do I need to install anything?: No. It runs in any modern browser, free, with no account required.