Question

report a molar absorptivity of 4700 L mol^-1 cm^-1 for the thiocyanatoiron(III) ion. What %T would you expect for a solution that is 1.0 x 10^-4 in thiocyanatoiron(III) ion, if the path length is 1.00 cm?

Answer 1

%T will be 33.9 %

Step-by-step explanation:

Given data

molar absorptivity = 4700 L mol^-1 cm^-1

path length = 1.00 cm

concentration ion = 1.0 x 10^-4 M

to find out

What transmittance % T expect

solution

we calculate absorbance by this formula i.e

absorbance = molar absorptivity × path length × concentration ion

absorbance = 4700 × 1 × 10^-4 × 1

absorbance is 0.47

so %T will be calculated by this formula

absorbance = 2 - log(%T)

so put value here

0.47 = 2 - log (%T)

log (%T) = 1.53

so %T will be 33.9 %