Question

1. a) Which of the following increases as the concentration of a colored solution increases? wavelenght transmittance absorbance b) A blue-green solution will absorb light most strongly in this part of the spectrum: 450nm 580nm 800nm

Answer 1

a.) ABSORBANCE : BEER LAMBERT LAW

A= e*b*c

e- molar absorbtivity

b- path length of sample

c- concentration of coloured solution

so here we can see that ABSORBANCE is directly propotional to its concentration so if we increases the concentration of coloued solution then absorbance increases.

TRANSMITTANCE= exp(-e*b*c)

so transmittance decrease exponentially with concentration of coloured solution.

WAVELENGTH: wavelength does depend upon colour on the basis of its energy having low energy it have high wavelenght. individual wavelength having individual colour so concentration is not specific term here.

b.) at 450 nm blue - green solution will absorbs most strongly.

to draw a caliberation curve between absrobance and wavelength where u can see that at 450 nm it absorbs most strongly.