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A solution of stearic acid (C(18)H(36)O(...

A solution of stearic acid `(C_(18)H_(36)O_(2),M=284)` in benzene contains `1.42` gm acid per L. When this solution (100 L) is dropped on surface, `C_(6)H_(6)` gets eveporated and acid forms a unimolecular layer on the surface. If it covers an area 6020 `cm^(2)` with unimolecular film, find the area covered by one molecule of acid.

A

`2xx10^(-20)cm^(2)`

B

`4xx10^(-20)cm^(2)`

C

`2xx10^(20)cm^(2)`

D

`4xx10^(20)cm^(2)`

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The correct Answer is:
A
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