Chemistry
Molarity
M = n ÷ V
Expresses solution concentration as moles per liter.
Formula category
Chemistry Formulas
Chemistry formulas for reactions, solutions, moles, concentration, and laboratory calculations.
Chemistry
Molality
m = n ÷ kg solvent
Expresses concentration as moles per kilogram of solvent.
Chemistry
Solution Dilution
C₁V₁ = C₂V₂
Relates concentration and volume before and after dilution.
Chemistry
Ideal Gas Law
PV = nRT
Relates pressure, volume, amount, and temperature of an ideal gas.
Chemistry
pH
pH = −log₁₀[H⁺]
Calculates acidity from the hydrogen ion concentration.
Chemistry
Percent Yield
% yield = actual ÷ theoretical × 100
Compares the measured product yield with the theoretical yield.
Chemistry
Mass to Moles
n = m ÷ M
Converts sample mass to amount of substance in moles.
Chemistry
Mole Fraction
Xᵢ = nᵢ ÷ nₜₒₜₐₗ
Finds a component's fraction of the total amount in a mixture.
Chemistry
Molarity Formula
M = n / V
Calculates solution concentration using moles of solute divided by solution volume.
Chemistry
Molality Formula
m = n / kg
Calculates solution concentration using moles of solute per kilogram of solvent.
Chemistry
Mole Fraction Formula
X = n₁ / n_total
Calculates the ratio of component moles to total moles in a mixture.
Chemistry
Dilution Formula
M₁V₁ = M₂V₂
Calculates concentration changes when a solution is diluted.
Chemistry
Stoichiometry Formula
n = m / M
Relates mass, moles, and molar mass for chemical calculations.
Chemistry
Molecular Weight Formula
MW = Σ atomic masses
Calculates molecular weight by adding the atomic masses of all atoms in a compound.
Chemistry
Mass to Moles Formula
n = m / M
Converts between mass and amount of substance using molar mass.
Chemistry
Percent Yield Formula
% Yield = (Actual Yield / Theoretical Yield) × 100
Calculates reaction efficiency by comparing actual and theoretical product amounts.
Chemistry
pH Formula
pH = -log[H⁺]
Calculates the acidity of a solution using hydrogen ion concentration.
Chemistry
pOH Formula
pOH = -log[OH⁻]
Calculates the basicity of a solution using hydroxide ion concentration.
Chemistry
Ideal Gas Law Formula
PV = nRT
Relates pressure, volume, temperature, and amount of gas.
Chemistry
Gas Density Formula
ρ = PM / RT
Calculates gas density using pressure, molar mass, temperature, and the gas constant.