Chapter17-Surface chemistry and colloids

Ex1-pg556

In [1]:
import math
##Intitalisation of variables
a= 265. ##cm^2
mw= 256. ##gm
N= 6.02*10**23 ##molecules
m= 5.19*10**-5 ##gms
##CALCULATIONS
asm= (a*mw)/(N*m)
##RESULTS
print'%s %.1e %s'% ('Area per single molecule = ',asm,' cm^2')

Area per single molecule =  2.2e-15  cm^2

Ex2-pg575

In [2]:
import math
##Intitalisation of variables
c1= 0.01 ##M
c2= 0.01 ##M
c3= 1. ##M
##CALCULATIONS
r1= (c1+c2)/c2
r2= (c3+c2)/c3
##RESULTS
print'%s %.2f %s'% ('Ratio =  ',r1,'')
print'%s %.2f %s'% ('\n Ratio =  ',r2,'')

Ratio =   2.00 

 Ratio =   1.01