IB Chemistry
Data Booklet Summary

Fundamental Constants

Constant	Value	Unit
Avogadro's number (Nₐ)	6.022 × 10²³	mol⁻¹
Gas constant (R)	8.314	J mol⁻¹ K⁻¹
Boltzmann constant (k)	1.381 × 10⁻²³	J K⁻¹
Planck's constant (h)	6.626 × 10⁻³⁴	J s
Speed of light (c)	2.998 × 10⁸	m s⁻¹

Enthalpy

ΔH = H_products - H_reactants
q = mcΔT
ΔH = ΣΔH_f(products) - ΣΔH_f(reactants)

Entropy

ΔG = ΔH - TΔS
ΔG < 0: spontaneous
ΔG = 0: equilibrium
ΔG > 0: non-spontaneous

Rate Laws

Rate = k[A]^m[B]^n
k = Ae^(-Ea/RT) (Arrhenius)
ln(k₂/k₁) = -Ea/R (1/T₂ - 1/T₁)

Equilibrium Constants

Kc = [products]/[reactants]
Kp = Kc(RT)^Δn
ΔG° = -RT ln(K)