Formulas: Chemistry

General and inorganic chemistry

• ν = m / M

• N = νNA

• meq = M / z, νeq = νz

• ω = msolute / msolution · 100%


Analytical chemistry and solutions

• C = ν / V, b = ν / msolvent

• N = νz / V

• C1V1 = C2V2

• N1V1 = N2V2

• pH = −log[H+], pOH = −log[OH−], pH + pOH = 14

• pH = pKa + log([base] / [acid])


Organic and physical chemistry

• DoU = (2C + 2 + N − H − X) / 2

• Yield = mactual / mtheoretical · 100%

• pV = νRT

• v = ΔC / Δt, C = C0e−kt — first order

• 1 / C = 1 / C0 + kt — second order

• t1/2 = ln 2 / k

• k = A e−Ea / RT

• ΔG = ΔH − TΔS, ΔG° = −RT ln K

• E = E° − (0.0591 / n) log Q

• m = MIt / (Fz)


Colloids and polymers

• φ = Vdisp / Vtotal

• Ksp = s² or follows the salt stoichiometry

• Kd = Corg / Caq

• θ = KC / (1 + KC), x / m = KC1/n