A Solution of palmitic acid in benzene contains 4.24 g of acid per litre. When this solution is dropped on a surface, benzene evaporates and palmitic acid forms a unimolecular film on the surface. If we wish to cover an area of 500 cm2 with a unimolecular film, what volume of solution (in litres) should be used? The area covered by one palmitic acid molecule may be taken as 0.21 nm2.Molecular weight of palmitic acid = 256 gmol−1.

A Solution of palmitic acid in benzene contains 4.24 g of acid per lit

1.	A Solution of palmitic acid in benzene contains 4.24 g of acid per litre. When this solution is dropped on a surface, benzene evaporates and palmitic acid forms a unimolecular film on the surface. If we wish to cover an area of 500 cm2 with a unimolecular film, what volume of solution (in litres) should be used? The area covered by one palmitic acid molecule may be taken as 0.21 nm2.Molecular weight of palmitic acid = 256 gmol−1.
Answer» A Solution of palmitic acid in benzene contains $4.24 g$ of acid per litre. When this solution is dropped on a surface, benzene evaporates and palmitic acid forms a unimolecular film on the surface. If we wish to cover an area of $500 {cm}^{2}$ with a unimolecular film, what volume of solution (in litres) should be used? The area covered by one palmitic acid molecule may be taken as $0.21 {nm}^{2}$ . Molecular weight of palmitic acid = 256 $g m o l^{- 1}$ .