Selected Chemical Formulas

General Formulas | |

Density | |

Moles | |

Equivalents | |

Converting from °F to °C | |

Converting from °C to °F | |

Converting from °C to K | |

Percent Yield | |

Electrical Force between 2 charges | |

Kinetic Energy |

Solution Formulas | |

Molarity | |

Molality | |

Normality | |

Mole Fraction | |

Dilution | |

Solubility Product Const (K_{sp}) | |

Definition of pK_{sp} |

Gases and Gas Laws | |

Boyle's Law of Gases | |

Charles' Law of Gases | |

Gay-Lussac's Law of Gases | |

Combined Gas Law | |

Ideal Gas Law | |

Density or Molar Mass of Gas | |

Dalton's Law of Partial Pressures | |

Root Mean Square Speed of a Gas | |

Van Der Waal's Equation | |

Graham's Law of Effusion' | |

Henry's Law |

Thermochemical Formulas | |

Specific Heat | |

Enthalpy Change of Reaction | |

First Law of Thermodynamics | |

Work Done in Gas Expand/Compress | |

Definition of Enthalpy | |

Enthalpy Change (Const P) | |

Clasius-Clapeyron Equation | |

Calculation of Hvap, vp, or bp of a liquid | |

Raoult’s Law | |

Boiling Point Elevation | |

Freezing Point Depression | |

Osmotic Pressure of a Solution | |

Gibbs Free Energy Change | |

Standard Entropy Change | |

Standard Free-Energy Change of a Reaction: | |

Free-Energy Change and Reaction Quotient | |

Standard Free-Energy Change and the Equilibrium Constant |

Equilibrium Formulas | |

Rate Law Expression | |

Concentration and Time for a 1 ^{st}-order Reaction | |

Graphical Determination of K for a 1 ^{st}-Order Reaction | |

Half-life for a 1^{st}-order Reaction | |

Concentration and Time for a 2 ^{nd}-order Reaction | |

Arrhenius Equation | |

Graphical Determination of Activation Energy | |

Rate Constants at Two Different Temperatures | |

General Expression of Equilibrium Constant: |

Acids and Bases | |

Ion-product Constant of Water: | |

Acid Equilibrium Const (K_{a}) | |

Base Equilibrium Const (K_{b}) | |

Definition of pK_{a} | |

Definition of pK_{b} | |

Percent Dissociation | |

Definition of pH of a Solution: | |

Definition of pOH of a Solution | |

Ionization Const of a Conj Acid-Base | |

Henderson-Hasselbach Equation | |

Alt Relationship Between pH and pOH |

Atomic Chemistry | |

Wavelength Frequency Relationship | |

Energy of Photon | |

Energy of an e^{-} in the n^{th} statein a Hydrogen atom | |

Energy emitted as the e^{-} transitionsfrom the n _{i}level to the n_{f} level | |

Mass Defect and Energy Released | |

Bragg Equation |

Electrochemistry | |

Standard EMF of an Electrochemical Cell | |

Standard Free Energy Change | |

Std EMF of the Cell to the Equilibrium Constant | |

The Nernst Equation |