Constants and EquationsM1V1 = M2V26.022 X 10^23 – Avo’s #Charles Law T1V2 = T2V1Boyle’s Law P1V1 = P2V2K = 273 + CPV = nRTR = .08206 Latm / kmold = P(MW) / RTDalton’s Law P total = Pa +Pb + Pc + …Grahams Law Ua / Ub = √ (MWb / MWa)Heat evolved = (heat cap)(mass sol’n)(change in temp)Heat evolved = heat absorbedΔH = nΣΔ Hf (products) - nΣΔ Hf (reactants)Wavelength X frequency = C (speed of light)C = 3.0 X 10^8E = h X frequencyE = HC / wavelenghH = planks constant 6.626 X 10^ -34E = -2.178 X 10^-18 ( (1/n final^2) – (1/n initial^2) )Formal charge = group # - ½ shared electrons – unshared electronsMolarity = moles solute / Liter solnWeight % = mass solute / mass solute + mass solventMole Fraction = moles solute / total molesMolality = moles solute / kg of solventRaoult’s Law Psoln = X solvent ( P solvent) ; x = mole fraction ; P solvent = pres. of pure solventΔT = Kf (m) ; m = molesLn ( N / No) = -ktT ½ = .693 / kK = A e ^ -Ea / RT K sp = (concentration of products) / (concentrations of reactants)pH = -log [ H+]pH + pOH = 1410 ^ -pH = [H+]Kw = 1 X 10^-14Kw = Ka X KbpH = pKa + log ([A-] / [HA+])Ex. Problems
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