A layer of 10.0 g of iodine is spread uniformly over a surface of area 10.0 cm2 and covered in hexane. What will be the molar concentration of iodine molecules at 5.0 cm above the original layer after (i) 10 s, (ii) 24 h? Assume diffusion is the only transport process, take D = 4.05 × 10−9 m2 s−1, and assume that the layer of hexane in infinitely deep.

A layer of 10.0 g of iodine is spread uniformly over a surface of area 10.0 cm² and covered in hexane. What will be the molar concentration of iodine molecules at 5.0 cm above the original layer after (i) 10 s, (ii) 24 h? Assume diffusion is the only transport process, take D = 4.05 × 10⁻⁹ m² s⁻¹, and assume that the layer of hexane in infinitely deep.