ERROR ANALYSIS (PART I)

Slide 22 of 24

Notes:

propagation error analysis for dilution

C1V1 = C2V2

C1=C2V2/V1

C1= f(C2,V2,V1)

DC1=(dC1/dC2)dC2 + dC1/dV2)dV2 + (dC1/dV1)dv1

dc1 = (v2/v1)dc2+(c2/v1)dv2+(-c2v2/v1)dv1

see above

for acetic acid :

c2 = 0.05 + 0.01 M

v2 = 25 + 1M

v1 = 100 + 4 M

c1 = (0.05+0.01M) (25+ 1ml)/ (100 + 4 ml) = 0.0125M

dC1 = 0.0125 [ (0.01/0.05) + (1/4)+ (4/100)]

= 0.006

there fore c = 0.013 + 0.006