begin mathsize 36px style v equals fraction numerator v subscript m a x end subscript left square bracket S right square bracket over denominator left square bracket S right square bracket space plus space K subscript m end fraction end style

v= Reaction Rate ; vmax =Maximum Rate ; [S] = Substrate Concentration ; Km = Michaelis Constant

begin mathsize 36px style k equals A. e to the power of bevelled fraction numerator E subscript A over denominator R. T end fraction end exponent end style

K = Rate Constant;  A = Frequency Factor;  EA = Activation Energy;  T = Temperature; R = Universal Gas Constant ;

begin mathsize 36px style R subscript 1 over R subscript 2 equals square root of M subscript 2 over M subscript 1 end root end style

R= Rate of effusion (or diffusion ) of the first gas ; R2 = Rate of effusion (or diffusion) of the second gas; M= Mass of the first gas; M2= Mass of the second gas

begin mathsize 36px style theta equals fraction numerator K subscript e q end subscript P over denominator 1 plus K subscript e q end subscript P end fraction end style

Keq = Equilibrium Constant of Adsorbtion;  P = Partial Pressure or Concentration of the absorbate;  θ = The fraction of adsorbent surface covered by adsorbate

begin mathsize 36px style log open parentheses K subscript 1 over K subscript 2 close parentheses space equals fraction numerator negative increment H to the power of O over denominator R end fraction open parentheses 1 over T subscript 2 minus 1 over T subscript 1 close parentheses end style

K1The equilibrium constant at absolute temperature T1 ; K2=The equilibrium constant at absolute temperature T2 ;
ΔHo
The standard enthalpy change ; T& T2 = Temperature; R= Gas constant