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⚙️ Developer UtilitiesFree
Equilibrium constant from cell potential
K from E°, n, T, free
A
POST /chem/equilibrium-constant-from-emf$0.002⚙️ Developer UtilitiesFree
Equilibrium partial pressure from Kp calculator
gas stoichiometry, free
P
POST /chem/equilibrium-partial-pressure$0.002⚙️ Developer UtilitiesFree
Equivalent weight calculator
EW = M / n from molar mass and valence, free
P
POST /chem/equivalent-weight$0.002⚙️ Developer UtilitiesFree
Excess reactant remaining calculator
leftover mass free
A
POST /chem/excess-reactant-remaining$0.002⚙️ Developer UtilitiesFree
Faraday electrolysis mass calculator
mass deposited from I, t, M, n, free
A
POST /chem/faraday-mass-deposited$0.002⚙️ Developer UtilitiesFree
Final temperature of mixture calculator
two substances, free
A
POST /chem/final-temperature-two-substances$0.002⚙️ Developer UtilitiesFree
First-order half-life calculator
t½ from rate constant k, free
A
POST /chem/first-order-half-life$0.002⚙️ Developer UtilitiesFree
Formal charge calculator
valence, lone pairs, bonding electrons, free
P
POST /chem/formal-charge$0.002⚙️ Developer UtilitiesFree
Fraction dissociated calculator
α from Ka and concentration, free
P
POST /chem/fraction-dissociated-from-ka$0.002⚙️ Developer UtilitiesFree
Freezing mixture temperature calculator
ice-salt ΔTf from molality, free
A
POST /chem/freezing-mixture-temperature$0.002⚙️ Developer UtilitiesFree
Freezing point depression calculator
ΔTf = i·Kf·m free
A
POST /chem/freezing-point-depression$0.002⚙️ Developer UtilitiesFree
Gas collected over water calculator
dry gas partial pressure free
A
POST /chem/gas-collected-over-water$0.002⚙️ Developer UtilitiesFree
Gas density at STP calculator
ρ from molar mass at 0 °C, 1 atm, free
A
POST /chem/gas-density-at-stp$0.002⚙️ Developer UtilitiesFree
Ideal gas density calculator
ρ=PM/RT from P, M and T, free
A
POST /chem/gas-density-ideal$0.002⚙️ Developer UtilitiesFree
Gas moles calculator
ideal gas n = PV/RT from pressure, volume and temperature, free
A
POST /chem/gas-moles-from-ptv$0.002⚙️ Developer UtilitiesFree
Gas pressure from moles calculator
ideal-gas P=nRT/V, free
A
POST /chem/gas-pressure-from-moles$0.002⚙️ Developer UtilitiesFree
Electrolysis gas volume calculator
Faraday charge to STP volume, free
P
POST /chem/gas-volume-electrolysis$0.002⚙️ Developer UtilitiesFree
Gas volume from moles calculator
V = nRT/P ideal gas, free
P
POST /chem/gas-volume-from-moles$0.002⚙️ Developer UtilitiesFree
Gay-Lussac final pressure calculator
P2 from P1, T1, T2 at constant V, free
A
POST /chem/gay-lussac-final-pressure$0.002⚙️ Developer UtilitiesFree
Gay-Lussac's law calculator
final gas temperature from pressure, free
P
POST /chem/gay-lussac-final-temperature$0.002⚙️ Developer UtilitiesFree
Spontaneity crossover temperature
T where ΔG = 0 from ΔH and ΔS
P
POST /chem/gibbs-crossover-temperature$0.002⚙️ Developer UtilitiesFree
Gibbs free energy calculator
ΔG = ΔH − TΔS from enthalpy, entropy and temperature, free
A
POST /chem/gibbs-free-energy$0.002⚙️ Developer UtilitiesFree
Gibbs energy from equilibrium constant calculator
ΔG° = −RT ln(K), free
A
POST /chem/gibbs-from-equilibrium$0.002⚙️ Developer UtilitiesFree
Non-standard Gibbs free energy calculator
ΔG from ΔG°, Q, T
A
POST /chem/gibbs-non-standard$0.002⚙️ Developer UtilitiesFree
Reaction spontaneity calculator
Gibbs ΔG from ΔH, ΔS, T
A
POST /chem/gibbs-spontaneity$0.002⚙️ Developer UtilitiesFree
Graham's law calculator
effusion rate ratio from molar mass, free
P
POST /chem/graham-effusion-rate-ratio$0.002⚙️ Developer UtilitiesFree
Graham effusion time calculator
t2 from t1 and molar masses, free
A
POST /chem/graham-effusion-time$0.002⚙️ Developer UtilitiesFree
Unknown molar mass from effusion calculator
Graham's law free
A
POST /chem/graham-unknown-molar-mass$0.002⚙️ Developer UtilitiesFree
Grams to moles calculator
n = m/M free
A
POST /chem/grams-to-moles$0.002⚙️ Developer UtilitiesFree
Grams to particles calculator
mass and molar mass to N, free
A
POST /chem/grams-to-particles$0.002⚙️ Developer UtilitiesFree
Half-life calculator
remaining amount after decay, free
A
POST /chem/half-life$0.002⚙️ Developer UtilitiesFree
Number of half-lives calculator
elapsed time over t½, free
A
POST /chem/half-lives-elapsed$0.002⚙️ Developer UtilitiesFree
Molar heat capacity ratio calculator
γ = Cp/Cv, free
P
POST /chem/heat-capacity-ratio$0.002⚙️ Developer UtilitiesFree
Heat of neutralization calculator
molar ΔH from heat and moles of water
P
POST /chem/heat-of-neutralization$0.002⚙️ Developer UtilitiesFree
Heat of solution calculator
molar ΔH_sol = q/n from heat and moles, free
A
POST /chem/heat-of-solution$0.002⚙️ Developer UtilitiesFree
Heat required to raise temperature calculator
Q = m·c·ΔT from mass, c and ΔT, free
A
POST /chem/heat-to-raise-temperature$0.002⚙️ Developer UtilitiesFree
Henderson–Hasselbalch calculator
buffer pH from pKa and ratio, free
P
POST /chem/henderson-hasselbalch$0.002⚙️ Developer UtilitiesFree
Henry's law constant calculator
kH = c/p from concentration and partial pressure
P
POST /chem/henrys-law-constant$0.002⚙️ Developer UtilitiesFree
Henry's law gas solubility calculator
c = k_H · p, free
A
POST /chem/henrys-law-solubility$0.002⚙️ Developer UtilitiesFree
Hess's law calculator
overall reaction enthalpy from steps, free
P
POST /chem/hess-law$0.002⚙️ Developer UtilitiesFree
Hydrate formula calculator
water of crystallization n from mass, free
P
POST /chem/hydrate-formula$0.002⚙️ Developer UtilitiesFree
Hydrogen ion from weak acid calculator
[H+] from C and Ka, free
A
POST /chem/hydrogen-ion-weak-acid$0.002⚙️ Developer UtilitiesFree
Hydroxide concentration from pOH calculator
[OH−] = 10^(−pOH)
A
POST /chem/hydroxide-from-poh$0.002⚙️ Developer UtilitiesFree
Ideal gas law chemistry calculator
solve PV = nRT for P, V, n, or T
P
POST /chem/ideal-gas$0.002⚙️ Developer UtilitiesFree
Integrated rate law order checker
which plot is linear, free
P
POST /chem/integrated-rate-order$0.002⚙️ Developer UtilitiesFree
Internal energy change calculator
ΔU = Q − W first law, free
P
POST /chem/internal-energy-change$0.002⚙️ Developer UtilitiesFree
Ionic strength calculator
I = ½ Σ c_i z_i² free
A
POST /chem/ionic-strength$0.002⚙️ Developer UtilitiesFree
Isotope abundance calculator
percent from average mass, free
A
POST /chem/isotope-abundance$0.002⚙️ Developer UtilitiesFree
Ka from pH calculator
acid dissociation from concentration and pH, free
A
POST /chem/ka-from-ph$0.002⚙️ Developer UtilitiesFree
Kb from pKb calculator
base dissociation constant Kb = 10^(−pKb), free
P
POST /chem/kb-from-pkb$0.002⚙️ Developer UtilitiesFree
Kc from degree of dissociation calculator
equilibrium constant from α and c₀, free
P
POST /chem/kc-from-dissociation$0.002⚙️ Developer UtilitiesFree
Kp from Kc calculator
convert with T and Δn, free
A
POST /chem/kp-kc-conversion$0.002⚙️ Developer UtilitiesFree
Lattice energy calculator
Born–Landé equation, free
A
POST /chem/lattice-energy-born-lande$0.002⚙️ Developer UtilitiesFree
Product mass from limiting reactant calculator
two reagents, free
A
POST /chem/limiting-reactant-product-mass$0.002⚙️ Developer UtilitiesFree
Mass fraction calculator
w and mass % from solute and total mass, free
A
POST /chem/mass-fraction$0.002⚙️ Developer UtilitiesFree
Mass fraction to mole fraction calculator
free
A
POST /chem/mass-fraction-to-mole-fraction$0.002⚙️ Developer UtilitiesFree
Pure mass from purity calculator
impure sample to pure substance mass, free
A
POST /chem/mass-from-purity$0.002⚙️ Developer UtilitiesFree
Mass of element in sample calculator
m_element from sample mass and mass fraction, free
P
POST /chem/mass-of-element-in-sample$0.002⚙️ Developer UtilitiesFree
Mass of product from reactant calculator
grams via mole ratio, free
A
POST /chem/mass-of-product-from-reactant$0.002⚙️ Developer UtilitiesFree
Mass percent calculator
w/w concentration from solute and solution mass, free
P
POST /chem/mass-percent$0.002No capabilities match your search.
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2
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3
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