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12. At investigation of stearic acid adsorption from n-hexane solution on the steel powder the

next results were obtained:

4

7

15

25

C-10³,

mol/1

A-10³, 0,81

kg/kg

0,90

10

1,30

1,47

20

1,60

1,70

Using the Langmuir equation calculate the specific area of the steel powder if area per 1

molecule of stearic acid in saturated monolayer equals to 0,20 nm².

Fig: 1