Identify E and give a curly arrow mechanism for the synthesis of furan F from diketone E. E H* E + H₂NNH₂ F Identify diketone E and give a curly arrow mechanism for the synthesis of pyrazole F (used in the synthesis of Viagra). H* -Ph F

Q: Calculate the pH for each of the cases in the titration of 25.0 ml. of 0.220 M pyridine, C, H, N(aq)…

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Q: (R)-1,2-dibromobutane

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Q: 250 m^3 to mm^3  239 cm^2 to km^2

A: 1m = 103 mm  1m = 102 cm  1km = 103 m  1km = 105 cm 1 m3 = 109 mm3  1km2 = 1010 cm2  1 cm2 = 10-10…

Q: Consider the same enzyme catalyzed reaction with KM 25 mM, Vm-100 mM/s, and [S]20 mM. A…

A: Given that  KM is 25 mM Vm is 100 mM/s [S] is 20 mM KI is 10 mM [I] is 5 mM

Q: Moving to on 7 Which structure has a formal charge of -1 on the carbon shown with a 1 =C- (b) (c) d…

A: Question-7 The formal charge of an atom or a molecule is the charge that has been assigned to an…

Q: - 18 Of the hydrocarbons listed below, which is the strongest acid? A. CH3 C C CH3 B. HCC-CH3 C.…

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Q: CH₂ How could you distinguish between these two compounds by spectroscopy? State which type you…

A: Given that, two compounds We have to tell which type of spectroscopy techniques we should used to…

Q: what is the ph of a buffer solution made by adding 0.010 mole of solid NaF to 50. mL of 0.40 M HF.…

A: 0.010 mole of solid NaF is added to 50 mL of 0.40 M HF . The Ka of HF is 6.9 × 10-4 .We have to…

Q: Which of the following is/are more soluble in this solvent than in water? BaCl2

A: Water is a polar solvent and it can dissolve an ionic or polar covalent compound.

Q: - 22 What is the organic product formed in the following sequence reactions? A. OH B. OH OH 1)…

A: 22. Given that, a reaction is We have to give the organic product of the above given reaction.…

Q: 2. The enthalpy of combustion of butanoic acid is -38.91 kJ/g. Combustion of 2.63 g of butanoic acid…

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Q: es) & A 13 5 Paragraph Accessibility: Good to go f4 IDI Y V Which of the following statements is…

A: The third statement is incorrect. Reason:- The secondary structure is related to the local…

Q: Q8. Fill in the boxes with the missing reagents lote: the "I" in the middle top compound is iodine.…

A: Alkanes are less reactive in nature therefore they mainly gives substitution reaction. Alkyl halide…

Q: 442, and Z. find the isotopic abundance of each isotop. Question 3: Atom Z has 2 isotops: the…

A: Answer: Isotope are the different forms of a chemical element with same atomic number but different…

Q: FART IL SHOKE ANSWERS QUESTIO No he flowing decades 1813) (9 1) CL-CH-CH-CH-CH-CH-CH CH 2)…

A: IUPAC - international  union of pure and applied chemistry.

Q: How could you obtain the two products shown below from 1-bromo-1-methylcyclohexane H&H Ή

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Q: 8 cm3 = __________ L Group of answer choices .0227 22.7 57800 .0578

A: 1 Litre = 1000cm3  X       =  8 cm3  = . 008 litre

Q: Calculate the average rate of production of H2 between 0 and 37.9 s. Now calculate the rates for PH3…

A: To calculate the rate average rate of disappearance of PH3 and the rate of production of H2 0 and…

Q: 2. Propose a sequence of reactions that efficiently converts the given starting material to the…

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Q: Measurements show that the energy of a mixture of gaseous reactants decreases by 309. kJ during a…

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Q: تک 0 Synthesis of Imidazo [1,5-a] pyridium NH₂ Pon. H NO HCL tho

A: Step by step mechanism.

Q: For the reaction: CH4 + 2H2S + heat  ⇔ CS2 + 4H2. How would each of the following changes, when…

A: Answer: This question is based on Le-chatalier's principle which suggests that on changing any…

Q: но. НО I но, I

A:

Q: 21. A solution is made by combining 500 mL of 0.10 MHF with 300 mL of 0.15 MNaF. What is the pH of…

A: A solution of weak acid and the salt of its conjugate base acts as a buffer. The pH of a buffer…

Q: Heating the receiving flask removes the impurities in the distillate. True or False

A: The process is called Simple distillation Simple distillation is process of seperating mixtures.…

Q: Which of the following statements is false? Many peptides come together to form polypeptides They…

A: The statement " Many peptides comes together to form polypeptides" is incorrect. A peptide is two or…

Q: H H

A: pKa is around 8.5 , therefore it is slightly basic in nature.

Q: 22 What is the organic product formed in the following sequence reactions? A. ED OH B. (5) O OH 1)…

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Q: How many alpha hydrogens does 2-methylcyclohexanone have? 0 1 2 3 4

A: The carbon adjacent to the carbonyl carbon is known as the alpha carbon and the hydrogen that is…

Q: Which of the following is permissible set of quantum numbers Group of answer choices 3, 0, 1, +1/2…

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Q: 54 Atom Y has 2 isotops: one is Y, and the abundance of the other one is 60%. The average atomic…

A: Given that the atom Y has two isotopes. The abundance of second isotope is 60%. The abundance of…

Q: The gas tank of a certain vehicle holds 22.9 gallons. How many pounds of carbon dioxide are produced…

A: 1 gallon = 3.75 litres

Q: Find the density of Freon-11 (CFCl3) at 188 degrees C and 1.55 atm.

A: Answer: To solve this question we have to use the density form of ideal gas equation. Given data:…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 809.0 mg sample…

A: Given, mass (m) = 809.0 mg = 0.809 g Initial temperature (Ti) = 52.2 °C = (52.2 + 273.15) K = 325.35…

Q: QUESTION 19 Valence Bond theory explains that a overlap and two electrons with paired a# bond forms…

A: Explanation: When the orbitals of two atoms overlap and a pair of electrons are present in the…

Q: QUESTION 10 Match the description to the bond type or theory. Head-to-Head Overlap Side-to-Side…

A: Head-to-Head Overlap: Sigma (0) Bonding Side-to-Side Overlap: Pi (n) Bonding Molecular orbital (MO)…

Q: 8 What is the organic product? B. HI D. ?

A: Given that, a reaction is We have to give the product of the above reaction. Introduction:…

Q: Mark the correct answer 5. The generation of heat by chemical reaction is due to a) heat input…

A: 5A) c) the enthalpy change of the system Heat is generated by chemical reactions due to the enthalpy…

Q: 1. Draw the structure of (S) 5-propoxy-3-hexen-2-one. 2. Give the IUPAC name of this compound:…

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Q: Predict the major product for the following reaction. A B C D E 1. BH 3 THF 2. H₂O2, NaOH OH XOM OH…

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Q: Write a balanced chemical equation for the reaction of aqueous barium chloride and aqueous lithium…

A: A balanced chemical equation for the reaction of aqueous barium chloride and aqueous lithium nitrate…

Q: Which atom below is sp2 hybridized?

A: During orbital hybridization, the mixing of atomic orbitals takes place to form new orbitals known…

Q: The reaction below forms an organic product that is a racemic mixture. What is the product? CH, +…

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Q: Aside from Zn2+ complexes like [Zn(OH)4]2-, Sc3+ complexes like [Sc(NH3)6]3+ and [ScCl6]3- are also…

A: The complex contains upaired d electron .The colour of the complex compound is due to d−d electronic…

Q: after 55 years what mass (in g) remains of a 200.0 g sample of a radioactive isotope with a half…

A: The disintegration of a radioactive isotope occurs via first order reaction for which by it's half…

Q: How do I find out how many protons an atom has?

A: We have to find out the number of protons in an atom.

Q: ▬▬ 27 For the reaction shown, which of the compounds listed would be the expected major, and FINAL…

A: 27) Alkynes reacts with Hg+2/H+ and water to form ketones, via an enol intermediate.

Q: a O b of the two structures would be more acidic? =H (a) (b) H

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Q: The temperature of a sample was observed to increase by 3.1 Kelvin. What is the value of this change…

A: This is a simple example of conversion from kelvin to Fahrenheit scale of a tempearture.

Q: What is the IUPAC name for the compound shown below?

A: Rule of IUPAC- 1) Choose the longest carbon chain as parent chain. 2) Numbering start from those…

Aromatic Compounds

Aromatic organic compound or aromatic system is an important class of hydrocarbons under the branch of organic chemistry. Aromatic compounds are also called arenas. The definition of aromatic organic compounds can be stated as a class of organic compounds with a planar cyclic ring of atoms bonded through alternated single and double bonds. Due to these alternating bonds, a peculiar feature termed as ‘resonance’, that is, delocalization of pi electrons or the electrons is shared within the atoms of the ring which are present in the aromatic compounds. The word ‘aromatic’ includes a Greek word ‘aroma’ which means smell, indicating that they were named as such due to the sweet odor they produce. Many well-known flavors such as vanilla, cinnamon, and few scents from flowers are extracted from aromatic compounds. Benzene with chemical formula C6H6 is a very common aromatic compound that contains six atoms of carbon held in the cyclic ring of alternate double bonds. It is also to be noted that not all aromatic compounds contain benzene ring. This can be explained by Huckel’s rule.