colour | absorbed wavelength (nm) | expected λmax (nm) |
violet | 380-420 | 400 |
indigo | 420-440 | 430 |
blue | 440-490 | 480 |
green | 490-570 | 530 |
yellow | 570-585 | 575 |
orange | 585-620 | 600 |
red | 620-780 | 650 |
3. Around what absorbance would you expect the Amax to be with each color solution? (blue,...
What type of a color afterimage would you see if you stared at a picture of a red bird in a blue cage? 1. a green bird in a yellow cage 2. a yellow bird in a red cage 3. a blue bird in a green cage 4. a yellow bird in a green cage
250 Experiments 2. A solution causes a yellow color with thymol blue, an orange color with methyl orange, a color with methyl red, and a yellow color with bromthymol blue. The pH must le between and The estimated pH is_ b. A solution causes a yellow color with thymol blue, yellow colors with both methylona and methyl red, and a green color with bromthymol blue. The pH must lie between and The estimated pH is
1. Define λmax and explain why it is desirable to do the experimental procedure at λmax? 2. around what absorbance would you expect the λmax to be with each color solution? (Blue, green, red, yellow) 3. a pipet is used to make the solution dilutions in lab. suppose in making the dilution, additional distilled water is accidentally added. Will the concentration of the solution be higher or lower that disered? explain.
With what color light would you expect to be able to see the finest detail when using a microscope? A. yellow, because of its intermediate wavelength B. red, because of its long wavelength C. blue, because of its shorter wavelength D. The color does not matter.
PROCEDURE A. ABSORBANCE SPECTRA 1. Obtain three cuvettes. Add-2mL of the following samples to them: red dye, blue dye, yellow dye. 2. Obtain a spectrum for each dye according to the provided directions (water is the blank). 3. For each of the three dyes (red, yellow, and blue) record the wavelength for the largest peak in the visible range (380 nm to 750 nm), Record this in the data table below. Save the red dye for part B. 4. Identify...
The electronic absorption spectrum UI (Cr(NH3)6]3+ (aq) is shown in Figure 11.5. One of the observed peaks is centered at about 303 nm. 1.a. What is the approximate value of the wavelength for the two other peaks? Which one of these three peaks falls in the visible region of the electromagnetic spectrum? The wavelength at this peak is (Amax), and this transition accounts for the color of the complex ion in solution. The energy of the transition occurring at...
If a fluorinated derivative of 1,3,5,7-octatetraene (F2C CF-CF=CF-CF=CF-CF=CF2) has a Amax Of 405 nm, what is observed color of this compound? blue orange red green yellow purple
yellow red green orange purple blue Select the color of the solution using the indicator thymol blue. When you first add indicator to your Na2CO3 solution, the color is blue When you reached the first equivalence point when moles of acid equals moles of base, the color is orange x. When you weren't paying attention and added too much HCl, the color is purple lx. When you really weren't paying attention and reached the second equivalence point, which is NOT...
5. One bag contains twenty candies with the following amounts of each color: 5-red, 6-blue, 3-green, 2-yellow, and 4-orange. One candy is drawn at random. a. What is the probability of drawing a blue candy? b. What is the probability of drawing a red candy or a green candy? c. You draw one candy and then a second candy without putting back the first. What is the probability of drawing a green candy on the second draw given that you...
1. What colors would be reflected by an orange tab if you placed it in red, green, or blue light? Justify your response with the results you had for red and yellow tabs in red, green, and blue 2.If you have a yellow light source and every color filter to use, could you produce every other possible color? Explain. 3. If an object is 20 cm from a lens and the image is formed 10 cm behind the lens, what...