1) What absorbance value corresponds to 43.1% T? 2) If a 0.0109 M solution of a

Question

1) What absorbance value corresponds to 43.1% T?

2) If a 0.0109 M solution of a certain analyte exhibits 43.1% T at a wavelength of 280 nm, what will the percent transmittance be for a 0.0254 M solution of the same analyte? Assume the pathlengths for each measurement are equal.

What absorbance value corresponds to 43.1% T? Number 0.366 If a 0.0109 M solution of a certain analyte exhibits 43.1% Tat a wavelength of 280 nm, what will the percent transmittance be for a 0.0254 M solution of the same analyte? Assume the pathlengths for each measurement are equal. Number 32 There is additional feedback available! View this feedback by clicking on the Incorrect bottom divider bar. Click on the divider bar again to hide the additional feedback. Close

Explanation / Answer

a)

Apply rule:

A = log(1/T)

A = log(1/0.431)

b)

% T for C = 0.0254 M

C1 = 0.0109

relate:

C1/T1 = C2/T2

T2 = C2/C1*T1 = (0.0254/0.0109)*43.1 --> 100.434 --> 100%

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