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Constants and Other Useful Information

Name Symbol Value
Ideal gas constant R 8.314472 J/K-mol or 0.082057 L-atm/K-mol (check your units!)
Avogardro's Number N 6.023 x 10-23
Charge of an electron e 1.6022 x 10-19 Coulombs (C)
Speed of light c 2.9979 x 108 m/s
Planck's constant h 6.6260693 x 10-34 J-s
Mass of electron me 9.10939 x 10-31 kg
Mass of proton mp 1.67262 x 10-27 kg
Mass of neutron mn 1.67493 x 10-27 kg
Faraday constant F 9.64853 x 104 C/mol
Water Auto-ionization constant Kw 1 x 10-14
Strong Acids HCl, HI, HBr, HNO3, HClO4, H2SO4
Strong Bases KOH, LiOH, CsOH, NaOH, RbOH, Ca(OH)2, Ba(OH)2, Sr(OH)2