The Rf values for several dyes in an ink are listed below. Which dye has the greatest affinity for the stationary phase?            Dye #1:  Rf = 0.263            Dye #2:  Rf = 0.551            Dye #3:  Rf = 0.737            Dye #4:  Rf = 0.882

Q: Complete the calcu lations to find the focus NIVI= N2UZ 0,15 -3,45=N2-2,8

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Q: Which structure is consistent with this IR spectrum? 0.8 0.6 0.4 0.2 0.0 3000 mmmm my 2000…

A: IR spectra provides the information of functional groups of unknown compound based on the…

Q: 0.14 0.12 0.1 0.08 0.06 0.04 0.02 1000 1500 2000 2500 3000 3500 4000 Wavenumber (cm) Absorbance…

A: Determination of a compound with just one spectrum is not adequate. However, the absorption spectrum…

Q: 4000 Wavenumbers (cm-1) 3500 3000 2500 2000 1500 1000 -20 -10 795.57 0 1739.19 1230.30 1204.94…

A: The question is based on the concept of IR spectroscopy. we analyse the spectra and identify the…

Q: Predict the number of signals expected in the ¹H-NMR spectrum. B Select an answer and submit. For…

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Q: ÓCH3

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Q: inclex hycrogen diffiuny c8 Hg NO I HD - 2C +2-H Chemical Formula: C8H5NO 1 = 2 (6)+ 2 -5 10 2 = 13…

A: IR: infrared spectroscopy tells about the functional groups present in the structure with the strong…

Q: Define Rf and explain why the value of Rf can not be greater than 1(one).

A: Rf value is defined as ratio of distance travelled by solute to distance travelled by solvent.

Q: Chemistry Name 3 major peaks and their bond types. What compounds do you think are present?

A: The above given IR is the infrared spectrum test of  polyphospazine containing carbazole in addition…

Q: Match the following compounds to the given IR spectra. On each IR spectrum, label the absorptions…

A: To match the given IR spectra to one of the compounds.

Q: CDC13 240 220 200 QE-300 180 160 140 120 100 80 60 40 20 0

A: Two triplets at 4.3 ppm and 2.5 ppm for 2H each and a quintet at 2.2 ppm for 2H in 1H NMR suggests…

Q: Which of the following molecules is responsible for this IR spectrum?

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Q: A) A sample of dissolved oil in water has absorption in the infrared region. Which cuvette can be…

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Q: What is the linearity (r2) value of the following concentration and absorbance values: SAMPLE…

A: This an example of  lambert beer law which show a linear relationship between absorbance and…

Q: What are 2 different molecules with the molecular formula (C7H14O2)

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Q: Colorimetric reagents. Proteins will intensely absorb 280 nm light even in the absence of a…

A: It is important to use Bradford reagent to measure protein concentration, rather than just measuring…

Q: A B C ОН D E F

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Q: Describe the (general) relationship between the color of a pigment and the wavelength (and color) of…

A: Plants use the energy of sunlight to initiate the process of photosynthesis. Light comprises of…

Q: 100 4000 3000 2000 1S00 1000 KAVENUHBERI l Critical absorbance frequency(ies), cm1 Functional group…

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Q: 225 calc: 225 275 252 cale: 244 calc: 240

A: Woodward and Fieser formulated a set of empirical rules, which could be used to predict absorption…

Q: 45 3.5 3.0 2.5 1.5 1.0 0.5 8.5 8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.0 2.0 F80'7 F-99'0 SO'E T-86'1 ZI -1.31…

A: Given

Q: wavelength (microns) 2.5 100 89 10 11 13 15 4. 80 60 40 20 4000 3500 3000 2500 2000 1500 1000 625

A: The broad band corresponding to alcohol functional group should appear in the region of (3000-3500)…

Q: What is this compound base on the IR spectrum?

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Q: Chemistry

A: Option A: This option is correct because this molecule has 5 different environments for carbon (see…

Q: What is the unknown compound based on the IR Spectrum, explain why or the others are not the…

A: Ans: 3400 cm-1, 3300 cm-1 two peaks are N-H stretch, 1720 cm-1 carbonyl stretch of acid group. 3500…

Q: If an IR spectrum of a molecule shows 3 absorption peaks / bands, what is the number of IR active…

A: If an IR spectrum of a molecule shows 3 absorption peaks / bands ,the number of IR active modes of…

Q: Which molecule has the IR spectrum below. B Transmitance 0.8 0.6 0.4 0.2 4000 OH A 3000 B INFRARED…

A: A question based on IR spectroscopy of organic compounds. The most appropriate structure among the 4…

Q: 4- Which chemical type of absorption bands is the least intense in aqueous solutions? 1) MnCl2 2)…

A: We have to identify which of the given compound will show least intense absorption spectra.

Q: NMR spectra

A: NMR spectroscopy is based on the principle of magnetic resonance. It helps in the structure…

Q: Which of the following isotopes are NMR active and explain the reason: ¹H,²H, ¹2C, ¹³C, ¹4N, ¹5H,…

A: NMR spectroscopy is used to study the physical,chemical properties of matter and to determine the…

Q: Absorbance

A: In the given graph there are three dyes and the absorbance of these dyes with the wavelength is…

Q: Absorbance (b) -490 nm x=20 300 CIT 400 500 670 λ/nm 25 20 15 / 10 cm-¹ Figure 1 UV-vis absorption…

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Q: 2. Draw a molecule with the molecular formula C-H₁0O that would have the following peak(s) in its IR…

A: 1)M.F=C5H10O Sites of unsaturation for given compound is 1 this is due to carbonyl carbon of…

Q: What is the color of a KMnO4 solution? Which solution, 0.50M or 0.25M, will be darker in tone?

A: Note: According to our guidelines we are supposed to answer only one question. Kindly repost other…

Q: Based on the following figure, explain the effect of stray radiation on absorption measurement. 0.0%…

A: A question based on concentration terms that is to be accomplished.

Q: compound (A-F). D.

A: The right answer is the option C)

Q: Spectrum (2] 100 50 4000 3500 3000 2500 2000 1500 1000 500 Wavenumber (cm) % Transmittance

A: In given IR spectra we can see broad peak at ~3400cm-1  , which indicates presence of OH group. So…

Q: How many unique signals would be expected in each?? 13 C | DtPT १0 DEPT 135 *)に) - 3. NH2

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Q: 12) Chemical Formula: C9H200 IR: strong broad 3300cm-1 5 1H 9x2=18+2=20-20=0 1H 3 PPM 2 18H 0

A: The chemical formula of the unknown organic compound is C9H20O.