ChemEquations
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Equations
Atomic Structure
\(E = h \nu\)
\(c = \lambda \nu\)
Acids and Bases
\(K_a = \frac{[H^+][A^-]}{[HA]}\)
\(K_b = \frac{[OH^-][HB^+]}{[B]}\)
\(K_w = [H^+][OH^-] = K_a \times K_b\)
\(pH = -\log[H^+]\)
\(pOH = -\log[OH^-]\)
\(pH + pOH = 14\)
\(pH = pK_a + \log\frac{[A^-]}{[HA]}\)
Kinetics
\([A] = [A]_0 - kt\)
\(\ln[A] = \ln[A]_0 - kt\)
\(\frac{1}{[A]} = \frac{1}{[A]_0} + kt\)
Gases
\(V \propto n\)
\(\frac{V_1}{T_1} = \frac{V_2}{T_2}\)
\(P_1V_1 = P_2V_2\)
\(\frac{P_1}{T_1} = \frac{P_2}{T_2}\)
\(PV = nRT\)
Solutions
\(M = \frac{n}{V}\)
Thermodynamics
\(q = mc\Delta T\)
\(\Delta H_f^\circ = \sum \Delta H_f^\circ (\text{products}) - \sum \Delta H_f^\circ (\text{reactants})\)
\(\Delta S_f^\circ = \sum \Delta S_f^\circ (\text{products}) - \sum \Delta S_f^\circ (\text{reactants})\)
\(\Delta G_f^\circ = \sum \Delta G_f^\circ (\text{products}) - \sum \Delta G_f^\circ (\text{reactants})\)
\(\Delta G = \Delta G^\circ + RT\ln Q\)
Electrochemistry
\(E = E^\circ - \frac{RT}{nF}\ln Q\)
\(E_{cell} = E_{cell}^\circ - \frac{0.0592}{n} \log Q\)