Calculators›Chemistry›Physical chemistry

Chemistry

Physical chemistry

Ideal gases, heat, Gibbs energy, equilibrium and kinetics.

Ideal gas pressure

p = nRT / V→Chemistry

Ideal gas volume

V = nRT / p→Chemistry

Heat from specific capacity

q = mcΔT→Chemistry

Gibbs free energy

ΔG = ΔH − TΔS→Chemistry

Equilibrium constant A+B⇌C+D

Kc = [C][D]/([A][B])→Chemistry

Arrhenius rate constant

k = A exp(−Eₐ/RT)→Chemistry

First-order half-life

t₁/₂ = ln 2 / k→Chemistry

Ideal gas equation (atm and L)

p = nRT / V→Chemistry

Chemical reaction rate

v = Δc / Δt→Chemistry

First-order kinetics

c = c₀e⁻ᵏᵗ→Chemistry

Second-order kinetics

c = 1 / (1/c₀ + kt)→Chemistry

First-order half-life (Android)

t₁⁄₂ = ln 2 / k→Chemistry

Arrhenius equation (Ea in J/mol)

k = Ae⁻ᴱᵃ⁄ᴿᵀ→Chemistry

Arrhenius at two temperatures

k₂ = k₁e^(Ea/R·(1/T₁−1/T₂))→Chemistry

Osmotic pressure with van 't Hoff factor

π = iCRT→Chemistry

Van 't Hoff factor from dissociation

i = 1 + α(ν − 1)→Chemistry

Gibbs energy (J/mol)

ΔG = ΔH − TΔS→Chemistry

Hess's law

ΔHᵣ = ΣΔHf(products) − ΣΔHf(reactants)→Chemistry

Equilibrium constant from Gibbs energy

K = e^(−ΔG°/RT)→Chemistry

Clausius–Clapeyron equation

P₂ = P₁e^(−ΔHvap/R·(1/T₂−1/T₁))→Chemistry

Nernst equation

E = E° − 0.0591 lgQ / n→Chemistry

Mass from Faraday's law

m = MIt / (zF)→