Question

A solution of benzene in methanol has a transmittance of 83% in a 1.00 cm cell at a wavelength of 254 nm. Only the benzene absorbs light at this wavelength, not the methanol. What will the solution's transmittance be if it is placed in a 10.00 cm long pathlength cell? O A. 8.80% OB. 2.1% OC. 98.2% OD. 8.30% OE. 15.5% OF. 96.2% O G. 27.8%

Answer 1

as per Lambert log I/Io = - Beer's law = -ace I/ L = t1qh 5 Hehe I= 1cm I/Io= 0.83 log IIo = - Ece 50 log 0.83 = - ECX Icm EC = + 0.6809RR 0:000922 + 1 cm for e=10 cm log I/Io = - EC X10 = -0.0oogRR X10 log I/Io = – 0.90922 IlIo = antilog (-0.80 g R) IlIo = 0.1551 I/Io = 15.51% so option is the right one.