Label each compound below as being aromatic, anti-aromatic or non-aromatic.

Q: When 22.0 mL of a 2.76 x 10-4 M nickel(II) sulfate solution is combined with 15.0 mL of a 1.31 x…

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Q: Place the stoichiometric coefficient for each of the following species in the properly-balanced…

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Q: O N H catalytic H₂SO4 H₂O heat

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Q: If 40.0 mL of formic acid with a concentration of 0.300 M and a Ka of (2.258x10^-5) is titrated with…

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Q: Use the table from ion exchange column to answer the following questions: Water sample volume (mL)…

A: The reaction between calcium and EDTA are :--- Ca2+ + EDTA <---> Ca -EDTA + 2H+Here, 1 mole of…

Q: Which of the following indicates that a system has not reached equilibrium? Q is greater than K two…

A: The direction in which the reaction proceeds to reach equilibrium can be predicted by determining…

Q: What quantity of electric charge is required to deposit 26.0 g of chromium from chromium chloride…

A: From Faraday's First law of the electrolysis,  the amount of the substance deposited(W) at the given…

Q: A 10 g sample of each substance is placed in a -20°C freezer for 10 minutes. Which sample undergoes…

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Q: How many grams of magnesium carbonate would have to be dissolved in 750. mL of a 0.113 M bicarbonate…

A: Bicarbonate is a very weak acid, esp if it loses another proton and becomes the carbonate…

Q: A 1.00 liter solution contains 0.28 M ammonia and 0.36 M ammonium chloride. If 0.180 moles of…

A: The buffer solution containing ammonia and ammonium bromide is basic in nature. The addition of…

Q: 8.82*10^-2 of potassium bromide has an enthalpy change of 1620J when it dissolves in water. What is…

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Q: For each reaction below, draw structural formulas of all the organic compounds, and complete and…

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Q: Draw the structure and write the chemical formula for ethene. State whether the molecule is polar or…

A: Ethylene or ethene is the simplest form of alkene which has the chemical formula C2H4.

Q: d) How many PbS units are present in the unit cell. 4x1/8= 1/2 Pb 4x1/8 = //2S Y/2 PbY/2S-PbS e) The…

A: PbS adopted face centered cubic cell.Pictorial diagram of FCC unit cell.The total volume of the unit…

Q: Suppose a 250.mL flask is filled with 1.8mol of I2 and 1.4mol of HI. The following reaction becomes…

A: Initial Moles of I2 = 1.8 molInitial moles of HI = 1.4 molVolume of flask = 250 mLEquilibrium…

Q: Compound x has a molar mass of 230.29 g-mol element mass % carbon 62.58% hydrogen 9.63% oxygen…

A: Molecular formula: In a molecular formula we describe the number of atoms of all the elements…

Q: The concept that only two electrons with opposite spins can occupy any one orbital is known as…

A: The concept that only two electrons with opposite spins can occupy any one orbital is known as…

Q: Calculate the energy required to heat 490.0 mg of graphite from 6.4 °c to 12.2 °C. Assume the…

A: Mass of graphite = 490.0 mg = 0.490 gSpecific heat capacity of graphite = 0.710 J g-1 K-1We need to…

Q: According to the Henderson-Hasselbach equation, what will happen to the pH of a buffer solution…

A: Molarity of HA = 0.050 MMolarity of A- = 0.075 MpKa = 6.77 -> diluted 5 times.

Q: 1.9-BBN, THF 2. H₂O2, NaOH Select to Draw > HBr (1 equiv) Drawing Atoms, Bonds and Rings Draw or tap…

A: Organic reactions are those in which organic reactant react to form organic products. In the given…

Q: A solution is made by dissolving 0.645 mol of nonelectrolyte solute in 761 g of benzene. Calculate…

A: From standard data Kf of benzene = 5.12 °C/m  & freezing point of benzene ,Tf° = 5 49°CKb of…

Q: Compare the solubility of barium sulfate in each of the following aqueous solutions: 0.10 M Ba(NO3)2…

A: The question is based on common ion effect. It states that the degree of dissociation of a weak…

Q: In the laboratory, a general chemistry student measured the pH of a 0.350 M aqueous solution of…

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Q: In the following net ionic equation, identify each reactant as either a Bronsted-Lowry acid or a…

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Q: CI AICI 3

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Q: Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters A-D…

A: pKa of ethanol = 16.0pKa of hydrogen cyanide = 9.3

Q: The rate constant & for a certain reaction is measured at two different temperatures: temperature…

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Q: How many grams of NaF ( molar mass = 41.99 g/mol) would be needed to be added to 2.00 L of 0.100 M…

A: Molar mass of NaF = 41.99 g/molVolume of HF = 2.00 LMolarity of HF = 0.100 MpKa = 3.18 pH = 4.00

Q: 3. Examine the reaction mechanism found below: H₂(g) + ICI(g) → HCII(g) + H(g) H(g) +ICI(g) → HCl(g)…

A: The overall equation is achieved by adding all the steps of the mechanism of the reaction.Rate law…

Q: Cl₂ hv

A: This reaction is the benzylic halogenation reaction.This reaction proceed through radical pathway.At…

Q: 1) NaOEt 2) Br 3) H3O*, heat

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Q: Draw the major and minor monobromination products of this reaction. B3

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Q: In the laboratory, a student dilutes 21.5 mL of a 6.29 M hydroiodic acid solution to a total volume…

A: When we dilute a concentrated solution with pure water, the mole of solute remains constant in the…

Q: CS AND EQUILIBRIUM Deducing a rate law from the change in concentration over time raduate student is…

A: We have to find order to get rate law from Given data. Then we have to calculate the rate constant.

Q: Use the Henderson-Hasselbalch equation to calculate the pH of the solution prepared by dissolving…

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Q: Thank you. What is the percent yield?

A: Theoretical yield = 0.2108 g ( which is rounded off to 0.21 g) Actual yield = 0.19 g

Q: What is the solubility of Agl (Ksp = 8.3 x 10-17) in a 0.1 M solution of KI? O 8.3 x 10-16 M 4.9 x…

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Q: HO sequence own below. Use a dash or wedge bond to indicate stereochemistry of substituents on…

A: Thiols are considered to be good nucleophiles as they contain sulfur atoms (in -SH functional…

Q: Calculate the mass of urea that should be dissolved in 201 g of water at 35°C to produce a solution…

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Q: In the laboratory, a general chemistry student measured the pH of a 0.350 M aqueous solution of…

A: Given:The concentration of the aqueous solution of pyridine (C5H5N) is 0.350 MThe value of pH is…

Q: A constant current is passed through an electrolytic cell containing molten MgCl2 for 13.0 h. If…

A: Given,Mass of Cl2 = 5.80 x 105 gTime = 13.0 h

Q: HO ...... + Molecule A CI + Molecule B Is this a nucleophilic substitution reaction? + H* If this is…

A: We have been given two questions that are organic reactions and the questions are concerning these…

Q: Write a balanced chemical equation based on the following description: the reaction of powdered…

A: Balanced chemical equation can be defined as the reaction in which number of atoms of all the…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a  517.0mg…

A: Given,The mass of a substance = 517.0 mgInitial temperature = -4.5 0CFinal temperature = 13.7 0CThe…

Q: Which of the following compounds will undergo nitration most rapidly? OA B OC A OD OE NHCCH, $0,H D

A: Asking About electrophilic substitution

Q: Which of the following statements is FALSE?   Question 11 options:   a solution containing the…

A: weak acid produce strong conjugate base and weak base produce strong conjugate acid. conjugate base…

Q: 9. The molar heat of vaporization of water (AHvap) is 40.7 kJ/mol. Use the following form of the…

A: The Clausius-Clapeyron equation for a liquid-vapor equilibrium is derived using two major…

Q: To convert CH3CH=CHCH₂CH₂CHO to CH3(CH₂)4CH₂OH you will use O NaBH4 followed by H₂O* O H₂O/H*…

A: Convert CH3CH=CHCH2CH2CHO to CH3(CH2)4CH2OH

Q: 2900 6. 11.91 The boiling point and freezing point of sulfur dioxide are -10°C and -72.7°C (at 1…

A: Freezing point = -72.7°C  at 1 atm Boiling point = -10°C  at  1 atm Triple point = -75.5°C and  1.65…

Q: Draw both resonance structures of the most stable carbocation intermediate in the reaction shown.

A: A carbocation is an electron deficient species with carbon having positive charge. The stability of…

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.