Formulae:

• Weight of substance distilled over ∝ vapour pressure of substance*molecular weight of substance
• Retardation factor = distance moved by substance/distance moved by solvent
• Percent of element = Atomic mass of element * number of moles of product containing element * number of atoms of element in product * 100/mass of compound
• Percentage of nitrogen using Kjeldahl's method = 1.4 * mEq of H₂SO₄ used to neutralise NH₃/mass of compound
• Molecular weight = Weight of compound/no of moles of compound
• ΔT_f = K_f * molality = K_f * weight of solute * 1000/(molecular mass of solute * weight of solvent)
• ΔT_b = K_b * molality = K_f * weight of solute * 1000/(molecular mass of solute * weight of solvent)
• Number of equivalence = weight/equivalent weight
• Molar mass of acid = Equivalent weight * basicity
• Molar mass of base = Equivalent weight * acidity
• Equivalent weight of acid in silver salt method = E = (Weight of Silver salt * 108/weight of silver residue in crucible) - 107
• Equivalent weight of acid in Chloroplatinate method = E = (Weight of Chloroplatinate salt * 195/(2 * weight of platinum residue in crucible)) - 205
• Equivalent weight of acid/base in titration = weight of acid/base(g) * 1000/[volume of Standard solution used for neutralisation(ml) * Normality of standard solution]
• PV = nRT

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