Question

Do all compounds absorbe UV / vis light ? Give an example if with AID

Do all compounds absorbe UV / vis light ?

Give an example if with AID

Homework Answers

Answer #1

Molecules containing conjugated system of pi electrons absorb light closer to the visible region than saturated molecules with isolated double or triple bonds.Longer the conjugated system the longer the wavelength of the light absorbed.

For instance ethylene (H2C=CH2) absorbs light of wavelength in the far ultraviolet region of the emr at 180nm

1,3-butadiene(CH2=CH-CH=CH2 with two conjugated double bonds absorbs at 217 nm and is closer to the visible region

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
2. When illuminated by UV-Vis light, why do the organic compounds show up as a dark...
2. When illuminated by UV-Vis light, why do the organic compounds show up as a dark spot?
1. Enones show one more peak than carbonyl compounds using normal UV-Vis Spectroscopy. Explain.
1. Enones show one more peak than carbonyl compounds using normal UV-Vis Spectroscopy. Explain.
usually the concentration range chosen for collecting UV-Vis spectra of compounds in solution is 0.10-0.15M, why...
usually the concentration range chosen for collecting UV-Vis spectra of compounds in solution is 0.10-0.15M, why is this concentration range chosen? Explain why a dilute solution of ethylenediamine is used as solvent.
Why do we expect to see an isosbestic point in a UV-Vis experiment? What would it...
Why do we expect to see an isosbestic point in a UV-Vis experiment? What would it mean if the isosbestic point were not present?
What is ‘force majeure, viz major, also spelt vis major’? Explain, give an example and give...
What is ‘force majeure, viz major, also spelt vis major’? Explain, give an example and give an example of an insurance term specifically covering such an event and excluding such an event.
Protein concentration can be estimated by measuring the absorbance of protein-containing solutons using UV light. Give...
Protein concentration can be estimated by measuring the absorbance of protein-containing solutons using UV light. Give the names of the three aminio acids responsible for this and the UV wavelength at which they absorb light. What are some restrictions in using this technique?
(Copper Ammine Synthesis and UV-Vis Spectroscopic Analysis Lab) 1. Why would a chemist need to perform...
(Copper Ammine Synthesis and UV-Vis Spectroscopic Analysis Lab) 1. Why would a chemist need to perform BOTH a scan across all wavelengths and a scan at a specific wavelength? 2. How will you know if your calibration curve is acceptable?
Why do conjugated compounds absorb light in the Ultraviolet region? Why do more conjugated compounds absorb...
Why do conjugated compounds absorb light in the Ultraviolet region? Why do more conjugated compounds absorb at higher wavelengths/lower energies? What is required for organic compounds to absorb in the Visible light region?
UV-VIS SPECTROPHOTOMETRY The mole ratio between a metal , M+ , and a ligand, L, were...
UV-VIS SPECTROPHOTOMETRY The mole ratio between a metal , M+ , and a ligand, L, were determined using the continuous variation method. The yellow complex formed absorbs light at 400 nm. Stock solutions containing 1.00 × 10–4 M of each reactants were prepared. Different volumes of the stock solutions were mixed to give 9 different solutions, each having a total volume of 3.00 mL . Table 1 shows the volume of the ligand, L, used and the corresponding absorbances. Table...
A UV/vis light absorbance spectrophotometer produced the following linear calibration equation for a given standard, A=0.653C+0.0342...
A UV/vis light absorbance spectrophotometer produced the following linear calibration equation for a given standard, A=0.653C+0.0342 where C is the molar concentration and A is the absorbance. The detector's lifetime was running out, so the lab manager replaced the detector. Before the lab manager properly aligned the detector and diffraction grating, a student measured different standard concentrations and got the data in the second column of the table. The lab manager aligned the detector and diffraction grating and alerted the...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT