537
Appendix 2
Useful Physical Constants
Symbol
Name
Value
F
Faraday
96,494 coulombs mol –1
23,062 cal volt –1 eq –1
R
Gas constant
8.3145 J mol –1 K –1
82.060 cm 3 atm mol –1
N 0
Avogadro’s number
6.023 × 10 23 mol –1
k
Boltzmann constant
1.38045 × 10 –16 erg deg –1
e
Electrostatic charge
4.8029 × 10 –10 esu
1.60206 × 10 –19 coulomb
h
Planck’s constant
6.6252 × 10 –27 erg s –1
c
Velocity of light
2.9979 × 10 10 cm s –1
g
Standard gravity
980.665 cm s –2
atm
One standard atmosphere
1.01325 × 10 5 Pa
bar
One bar
10 5 Pa
cal
Calorie
4.184 J
Energy Conversion Factors: 1 cal mol –1 ; 4.184 J mol –1 ; 41.292 cm 3 atm
mol –1 ; 4.3361 10 –5 ev; 6.9465 10 –17 erg mol –1 ; 1 J mol –1 ; 0.23901 cal mol –1 ;
9.8692 cm 3 atm mol –1 .