Absorbance Definition
Compute Absorbance Definition using A = −log T = log(I_0 / I).
A = −log T = log(I_0 / I)Open calculator📊 Category
Analytical Chemistry Calculators
Beer–Lambert law, chromatography, NMR shift, LOD/LOQ, conductivity, and recovery.
40 calculators in this category.
Beer–Lambert Law
Compute Beer–Lambert Law using A = ε b c.
A = ε b cOpen calculatorBuffer Capacity
Compute Buffer Capacity using β = d n_strong base(or acid) / d(pH).
β = d n_strong base(or acid) / d(pH)Open calculatorCalibration Curve
Compute Calibration Curve using y = m x + b.
y = m x + bOpen calculatorChromatographic Resolution
Compute Chromatographic Resolution using R_s = 2(t_R2 − t_R1) / (w_1 + w_2).
R_s = 2(t_R2 − t_R1) / (w_1 + w_2)Open calculatorChromatographic Retention Factor
Compute Chromatographic Retention Factor using k' = (t_R − t_M) / t_M.
k' = (t_R − t_M) / t_MOpen calculatorChromatographic Selectivity
Compute Chromatographic Selectivity using α = k'_2 / k'_1.
α = k'_2 / k'_1Open calculatorConductance
Compute Conductance using G = 1 / R.
G = 1 / ROpen calculatorConductivity
Compute Conductivity using κ = G l / A.
κ = G l / AOpen calculatorConfidence Interval
Compute Confidence Interval using x̄ ± t s/√n.
x̄ ± t s/√nOpen calculatorCoulometric Relation
Compute Coulometric Relation using Q = n F N.
Q = n F NOpen calculatorDebye–Hückel Limiting Law
Compute Debye–Hückel Limiting Law using log γ_i = −A z_i^2 √I.
log γ_i = −A z_i^2 √IOpen calculatorDistribution Law (Nernst)
Compute Distribution Law (Nernst) using K_D = C_1 / C_2.
K_D = C_1 / C_2Open calculatorDistribution Ratio
Compute Distribution Ratio using D = total analyte concentration in phase 1 / total analyte concentration in phase 2.
D = total analyte concentration in phase 1 / total analyte concentration in phase 2Open calculatorEquivalent Weight
Compute Equivalent Weight using Eq wt = molar mass / n-factor.
Eq wt = molar mass / n-factorOpen calculatorExtended Debye–Hückel Equation
Compute Extended Debye–Hückel Equation using log γ_i = −A z_i^2 √I / (1 + B a_i √I).
log γ_i = −A z_i^2 √I / (1 + B a_i √I)Open calculatorFormality
Compute Formality using F = formula weight units / L solution.
F = formula weight units / L solutionOpen calculatorIonic Strength
Compute Ionic Strength using I = (1/2) Σ c_i z_i^2.
I = (1/2) Σ c_i z_i^2Open calculatorKohlrausch’s Law
Compute Kohlrausch’s Law using Λ_m = Λ_m° − K √c.
Λ_m = Λ_m° − K √cOpen calculatorLimit of Detection
Compute Limit of Detection using LOD = 3 σ / m.
LOD = 3 σ / mOpen calculatorLimit of Quantitation
Compute Limit of Quantitation using LOQ = 10 σ / m.
LOQ = 10 σ / mOpen calculatorMean
Compute Mean using x̄ = Σx_i / n.
x̄ = Σx_i / nOpen calculatorMolality–Molarity Approximation
Compute Molality–Molarity Approximation using M ≈ (1000 ρ w / M_s) / [1000 + b M_s].
M ≈ (1000 ρ w / M_s) / [1000 + b M_s]Open calculatorMolar Conductivity
Compute Molar Conductivity using Λ_m = κ / c.
Λ_m = κ / cOpen calculatorMoles at Equivalence
Compute Moles at Equivalence using n_a / ν_a = n_b / ν_b.
n_a / ν_a = n_b / ν_bOpen calculatorNormality
Compute Normality using N = equivalents / L solution.
N = equivalents / L solutionOpen calculatorParts per Billion
Compute Parts per Billion using ppb = (mass solute / mass solution) × 10^9.
ppb = (mass solute / mass solution) × 10^9Open calculatorParts per Million
Compute Parts per Million using ppm = (mass solute / mass solution) × 10^6.
ppm = (mass solute / mass solution) × 10^6Open calculatorPlate Height
Compute Plate Height using H = L / N.
H = L / NOpen calculatorRandles–Sevcik Equation
Compute Randles–Sevcik Equation using i_p = 2.69×10^5 n^(3/2) A D^(1/2) C ν^(1/2).
i_p = 2.69×10^5 n^(3/2) A D^(1/2) C ν^(1/2)Open calculatorRecovery Percentage
Compute Recovery Percentage using % recovery = (measured / added) × 100.
% recovery = (measured / added) × 100Open calculatorRelative Standard Deviation
Compute Relative Standard Deviation using %RSD = (s / x̄) × 100.
%RSD = (s / x̄) × 100Open calculatorStandard Deviation
Compute Standard Deviation using s = √(Σ(x_i − x̄)^2 / (n − 1)).
s = √(Σ(x_i − x̄)^2 / (n − 1))Open calculatorStandard Error of the Mean
Compute Standard Error of the Mean using s_x̄ = s / √n.
s_x̄ = s / √nOpen calculatorTheoretical Plate Number
Compute Theoretical Plate Number using N = 16(t_R / w)^2.
N = 16(t_R / w)^2Open calculatorTheoretical Plate Number (half-height form)
Compute Theoretical Plate Number (half-height form) using N = 5.54(t_R / w_1/2)^2.
N = 5.54(t_R / w_1/2)^2Open calculatorTitration Stoichiometry
Compute Titration Stoichiometry using C_a V_a / ν_a = C_b V_b / ν_b.
C_a V_a / ν_a = C_b V_b / ν_bOpen calculatorTransmittance Definition
Compute Transmittance Definition using T = I / I_0.
T = I / I_0Open calculatorVariance
Compute Variance using s^2 = Σ(x_i − x̄)^2 / (n − 1).
s^2 = Σ(x_i − x̄)^2 / (n − 1)Open calculatorWavenumber
Compute Wavenumber using ṽ = 1 / λ.
ṽ = 1 / λOpen calculator