If a solution has an absorbance value of 0.518 at a wavelength of 450 nm, what...

Question

Question

If a solution has an absorbance value of 0.518 at a wavelength of 450 nm, what is the percent transmittance of this solution at this wavelength?

Answer 1

Answer #1

use:

Absorbance = 2 – log(%T)

0.518 = 2 – log(%T)

log(%T) =2-0.518

log(%T) =1.482

%T = 10^1.482

= 30.3389

Answer: 30.3389 %

Answer 2

Similar Homework Help Questions

Problem: A blank gave an intensity of 628 mV at a wavelength of 450 nm in...

Problem: A blank gave an intensity of 628 mV at a wavelength of 450 nm in a 2.00 cm cell. A sample gave an intensity of 247 mv. What is the transmittance of the solution at this wavelength? (Show work and units) What is the absorbance of the solution at this wavelength? (Show work and units) The molar absorptivity of the analyte is 3.45x104 M-1 cm-1. Find the concentration of the analyte.
9. A solution has an absorbance of 0.85 at a given wavelength. What is the percent...

9. A solution has an absorbance of 0.85 at a given wavelength. What is the percent transmittance of a solution that is twice as concentrated at that wavelength (assuming the Beer-Lambert law applies)? a) 28% b) 7.1 % c) 2.0% d) 14% e) 4.0 % f) 1.0%
What absorbance value corresponds to 47.3% T'? A = A 0.0150 M solution of a certain...

What absorbance value corresponds to 47.3% T'? A = A 0.0150 M solution of a certain analyte exhibits 47.3% T at a wavelength of 280 nm. What will the percent transmittance be for a 0.0250 M solution of the same analyte? Assume the pathlengths for each measurement are equal. %T =

POST LABORATORY QUESTIONS solution appears to be orange, what range of wavelength would you use for...

POST LABORATORY QUESTIONS solution appears to be orange, what range of wavelength would you use for analysis of the solution? I. a. Ifa b. How about if the solution was green-blue? 2, a. what absorbance corresponds to a percent transmittance of 59.6 % T? b. What is the percent transmittance for a solution that has an absorbance of 0.49? 3. At a wavelength of 510 nm a 0.12 M solution of CoCla gave a percent transmittance value of28.9 %. The...
What absorbance value corresponds to 47.1% T? A 0.0188 M solution of a certain analyte exhibits...

What absorbance value corresponds to 47.1% T? A 0.0188 M solution of a certain analyte exhibits 47.1% T at a wavelength of 280 nm. What will the percent transmittance be for a 0.0281 M solution of the same analyte? Assume the pathlengths for each measurement are equal.
What absorbance value corresponds to 41.1% T? .386 A 0.0142 M solution of a certain analyte...

What absorbance value corresponds to 41.1% T? .386 A 0.0142 M solution of a certain analyte exhibits 41.1% T at a wavelength of 280 nm. What will the percent transmittance be for a 0.0284 M solution of the same analyte? Assume the pathlengths for each measurement are equal. %T

A solution of 0.0001 M nitroaniline has an absorbance of 0.45 at 410 nm. What is the percent transmittance to the n...

A solution of 0.0001 M nitroaniline has an absorbance of 0.45 at 410 nm. What is the percent transmittance to the nearest whole number (do not write units for your answer)
What absorbance value corresponds to 41.8% T? A = A 0.0110 M solution of a certain analyte exhibits 41.8% T at a wavele...

What absorbance value corresponds to 41.8% T? A = A 0.0110 M solution of a certain analyte exhibits 41.8% T at a wavelength of 280 nm. What will the percent transmittance be for a 0.0299 M solution of the same analyte? Assume the pathlengths for each measurement are equal. %T =
08 06 04 Absorbance 02 400 500 600 700 800 Wavelength (nm) For the absorbance spectrum...

08 06 04 Absorbance 02 400 500 600 700 800 Wavelength (nm) For the absorbance spectrum shown, determine the analytical wavelength. 370 nm 400 nm 450 nm o 505 nm 540 nm ОО 580 nm

a) If a compound has the wavelength of maximum absorbance of 600 nm, what would happen...

a) If a compound has the wavelength of maximum absorbance of 600 nm, what would happen if all of the samples were measured at a slightly higher wavelength (i.e. 620 nm)? b) When plotting data of concentration vs. absorption of the compound, will the change in wavelength affect the R^2 value of the graph? why or why not? c) Will the change in wavelength affect the molar absorptivity calculated from the graph? why or why not?