Problem Solving: A mass of 10.1500 g of triphenylmethanol (MW = 260.33) was synthesized in the lab by the reaction of bromobenzene (MW= 157.01) benzophenone (MW = 182.22), and magnesium (MW = 24.31). Calculate the mass (g) of bromobenzene and mass (g) of benzophenone required for this organic synthesis.

Problem Solving: A mass of 10.1500 g of triphenylmethanol (MW = 260.33) was synthesized in the lab by the reaction of bromobenzene (MW= 157.01) benzophenone (MW = 182.22), and magnesium (MW = 24.31). Calculate the mass (g) of bromobenzene and mass (g) of benzophenone required for this organic synthesis.

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter20: Dienes, Conjugated Systems, And Pericyclic Reactions

Section20.3: Uv-visible Spectroscopy

Problem 20.5P

See similar textbooks

Similar questions

Problem Solving: A mass of 10.1500 g of aspirin (MW = 180.16) was synthesized in the lab by the reaction of salicylic acid (MW = 138.12) and acetic ahydride (MW= 102.19). Calculate the mass (g) of salicylic acid and mass (g) of acetic anhydride required for this organic synthesis.
Caffeine is a common organic molecule found in many beverages such as coffee, tea,and cola. It is a stimulant to the central nervous system. That is why many students drink coffee or soda to help them feel alert.Like many conjugated organic molecules, caffeine absorbs radiation with a wavelength around 260 nm.In this analysis, the class of Ms Judy determined the caffeinecontentin Red Bull energy drinkusing UV-vis spectroscopy a. .Construct a calibration curve. b.What is the concentration of caffeine in the unknown sample? c. Complete the table
The weight of proteins or nucleic acids in solution is often determined by UV spectroscopy using the Beer-Lambert law. For example, the molar absorptivity, ɛ, of double-stranded DNA at 260 nm is 6670 M'cm-!. The formula weight of the repeating unit in DNA (650 Daltons) can be used as the molecular weight. What is the weight of DNA in 4.0 mL of aqueous buffer if the absorbance, measured in a 1-cm cuvette, is 0.35? Choose the correct value from the drop-down list provided. Weight of DNA: gram
Molecular Recognition (Supramolecular Chemistry) in organic chemistry deals with the "lock and key " mechanisms that form new molecules. However, little is known of this subject when moleules go beyond 1500 daltons (g/mole) for example macromolecules of polyolefins (polyethylene, polypropylene), thermoplastic polyesters and polyamides (nylon). It is understood that pre-directional H bonding is the mechanism of molecular recognition of macromolecules. Question: What is the immediate and post manifestation of inducing molecular recognition to condensation polymers and ring opening polymerization polymers like thermoplastic polyesters (PET ), and Nylon 66, 6 etc. (polyamides)?
Which functional group(s) would you confidently predict in a pure sample of an organic molecule that produces the following IR bands (cm ): 2923, 1667, 1245, 1054? alcohol, aldehyde, alkane aldehyde, benzene, ester aldehyde, ketone, ether carboxylic acid, alcohol, alkane carbonyl, ester, alkane
See problem below: Alfred was tasked to synthesize at least 250.0 ppm of his novel gold nanoparticles (AuNP’s) to be able to perform experiments about the efficacy of AuNP for viral detection. He decided to check whether he still needed to synthesize more or not using a UV Vis spectrophotometer. Fortunately, he already prepared a 100.0 ppm AuNP standard solution beforehand. He got a different aliquot of the standard, added stabilizing solutions, and diluted them to 10.0 mL for the determination of absorbance. Data he obtained is shown below. Table 1. Calibration curve data for AuNP v of 100.0 ppm AuNP standard, mL Absorbance 0.00 0.200 0.50 0.450 1.00 0.510 1.50 0.600 2.00 0.680 3.00 0.810 4.00 0.950 Question: How do I get the calibration curve from this data?
Which parameter between "solvent polarity function" and dielectric constant show better correlation with the peak positions? (cyclohexane, dioxane, acetonitrile, ethanol, ethylene glycol)
Carbon monoxide [CO] exhibits an IR absorption at 2143cm-1, acetone [CH3C(O)CH3],exhibits an IR absorption for the CO vibration at 1715 cm-1 and ethanol [CH3CH2OH] exhibits an IR absorption for CO at ~1150 cm-1. Draw Lewis structures of these three molecules and use your structures to explain the observed differences in the CO IR absorption peak frequency (nCO).
1) What is Beer-Lambert Law used for in Expt. 7? a) determining absorbances b) determining an unknown concentration of a sample by comparing its absorbance to absorbances of samples with known concentrations c) determining a reaction rate d) determining transmission 2) If absorptivity (the constant of how much light of a given wavelength the sample absorbs) and path length (how much solution there is for light to pass through) are the same, which is true for a Beer's Law solution? a) its concentration and absorbance are proportional b) its concentration and rate are proportional c) its absorbance and rate are proportional d) the solution is an alcoholic beverage 3) A practice using manual graphs question - please use the graph on p. 35 of your lab manual to answer it. If concentration of 10, is 1.6 x 10 M, what is the rate? a) 0.0090 s 1 b) 0.0115 s1 c) 1.6 d) 2.44 x 10s 4) A practice using line equations question - please use the graph on p. 41 of your lab manual to answer it.…
Organic Chemistry: IR spectroscopy A student obtains an IR spectrum with an intense, broad absorption at about 3350 cm-1. The student claims that the sample is an alcohol, but the professor says that the absorption is there because the sample is contaminated with water. What peak(s) could be looked for to show that the sample is indeed an alcohol? Which functional groups would make it difficult to use this strategy?
Starting material was [(Me5dien)CoCl2] and reacted with SCN to produce [(Me5dien)Co(SCN)2]. Using the two graphs given below how does the shifts in lamdamax for the observed peaks support your notion that Cl has been replaced with N? [(Me5dien)CoCl2] Peak A: 531.8 nm, 0.722 Abs Peak B: 609.7 nm, 0.666 Abs [(Me5dien)Co(SCN)2] Peak A: 510.2 nm, 0.357 Abs Peak B: 608.10 nm, 0.401 Abs
Question [4] 1. With regards to Fluorescence and Standard Addition. a) Draw and label the transitions characteristic of an aromatic molecule for the following processes using the diagram below. Note: the aromatic molecule has a Sovo S₂Vn absorption band at 250 nm. Only one answer for each. 1. Absorption of a 350 nm photon 2. Fluorescence emission at 450 nm and 460 nm (labels required) 3. Phosphorescence emission at 550 nm 4. Vibrational relaxation S₂ So S₁ Place the above processes in order from fastest to slowest: Fastest イへ Slowest