Many coloured dyes contain aromatic compounds that have two or more benzene rings. After long-term exposure to the sun, these dyes tend to fade. Propose an explanation for this phenomenon, taking into consideration the bonding nature of aromatic compounds.

Many coloured dyes contain aromatic compounds that have two or more benzene rings. After long-term exposure to the sun, these dyes tend to fade. Propose an explanation for this phenomenon, taking into consideration the bonding nature of aromatic compounds.

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter18: Aromaticity

Section: Chapter Questions

Problem 7CTQ

See similar textbooks

Related questions

Q: What is the major neutral organic product for the following sequence?

A: In this reaction,at presence of TMSCl ,it block the alcohol group by converting it into -OTMS .…

Q: What is the mass in grams of Al that were reacted with excess HCI if 6.92 L of hydrogen gas were…

A: Volume of H2 gas collected = 6.92 LMolar mass of Al = 26.98 g/molReaction:2 Al (s) + 6 HCI (aq) → 2…

Q: Name the major product(s) formed on mononitration of (a) 1,3-dinitrobenzene, and (b)…

A: NO2 is a meta direction groupCH3 is an ortho/para directing group

Q: 1) Show how the below transformations have occurred through the alkylation of imine and hydrazone…

A: To do this conversion,at first we convert the given carbonyl group to imine intermediate, when…

Q: Purple light can have a wavelength of 380. nm. What is the energy of a mole of photons of this…

Q: Place the three molecules shown here in order of increasing basicity. A a. A<B<C b. B<A <C C. C<A <B…

A: More easily the lone pair on nitrogen of compound donate ,then the more basic is that compound .

Q: f a sample of gas is at T = 324 K and 14.5 atm, and the temperature is increased to 531 K without…

A: Initial Temperature (T1) = 324 KInitial Pressure (P1) = 14.5 atmFinal Temperature (T2) = 531…

Q: Be sure to answer all parts. Nitroglycerin (C3HgN3O9) is a powerful explosive. Its decomposition may…

A: 4C3H5N3O9 -----> 6N2 + 12CO2 + 10H2O + O2mass of nitroglycerin (C3H5N3O9) reacts = 7.50 × 102…

Q: Explain the energy changes that are occurring at the different points of the reaction progress,…

A: The given diagram is of reaction process during a reaction . We can say that this is the potential…

Q: || Assigning oxidation numbers oxidation state of highlighted atom Cl (aq) 0 ST OH (aq) Br₂(9) 0…

A: Given, Species oxidation state of highlighted atom…

Q: How many moles of NHS gas form when 32.4 L of H: gas completely reacts at STP according to the…

Q: Br₂ H₂CCO₂H Z Br HBr

A: Aromatic compounds shows electrophilic aromatic substitution reactions in which benzene is acts as…

Q: What is the pH of a 1.000L solution of 0.100M HA after the addition of 1.000L of 0.075M NaOH? The Ka…

A: Volume of HA=1LMolarity of HA=0.1MVolume of NaOH=1LMolarity of NaOH=0.075M K2 of HA=6.78×10^-8

Q: Consider the titration of 100.0 mL of an unknown concentration of weak monoprotic acid with 0.550 M…

A: The volume of unknown weak monoprotic acid, V1 = 100.0 mLThe concentration of weak monoprotic acid,…

Q: AICI3 CI

Q: The mass percent of acetic acid in the bottle of vinegar is 5.45% in water. What is the…

A: Consider volume of solution = 1L or 1000 mL

Q: A 9.00 L tank at 28.9 °C is filled with 8.24 g of sulfur tetrafluoride gas and 5.83 g of chlorine…

A: Volume of the tank = 9 LTemperature = 28.9 0CAmount of sulfur tetrafluoride = 8.24 gAmount of…

Q: Zn(s) + 2AgNO₂ (aq) → Zn(NO3)₂ (aq) + 2Ag(s) Explanation Ca(s) + ZnCl₂ (aq) →→ Zn (s) + CaCl₂ (aq)…

A: In the context of oxidation numbers, "reduced" and "oxidized" refer to changes in the oxidation…

Q: Complete this table. name empirical formula iron(Ⅱ) chloride sodium oxide

A: Given compounds are nameempirical formulairon(Ⅱ) chloride?sodium oxide?

Q: Which of the following can be combined to form a buffer system? Question 9 options: calcium…

Q: For each reaction in the table below, write the chemical formulae of any reactants that will be…

A: Oxidation: Increase in oxidation numberReduction: Decrease in oxidation number

Q: Determine at least two elements of symmetry and assign the point group of the compounds below.…

A: Let us discuss the symmetry elements and point group of the given compounds.According to our…

Q: Convert a pressure of 1800.0 torr to atm.

Q: Consider the following peptide. Assume the following about the peptide: C-terminus, pKa = 2 &…

A: At isoelectronic point, no net charge exist on the peptide. It exist in overall neutral state.

Q: What is the major neutral organic product for the following sequence? O HO. CI,, HO HO HO 1. POCI3…

Q: In the titration of 10.0 mL of a 0.250 M HI solution with 0.200 M LiOH, what is the pH of the…

Q: HO HO НО НО

A: The acidic strength of any compound depends on the stability of its conjugate base.Higher the…

Q: Problem 4: Identify the expected major product(s) for the following reaction. HBr 40 °C ?? Br + En…

Q: 0.0322 M EDTA solution is used as the titrant in the titration of a 50.00 mL solution that is 0.0129…

A: EDTA titration is a type of complexometric titration that uses ethylenediaminetetraacetic acid…

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

Q: На :O: Hb =0=0 Hc :0: Hd

A: An acidic hydrogen refers to a hydrogen atom that is attached to a molecule or ion and is relatively…

Q: Consider 0.990L of pure water at 25°C. What is the change in pH if 10.0mL of 0.0054 M NaOH is added?

A: pH + pOH = 14pOH = -log [OH-]Number of mol = Volume (L) x Molarity

Q: Which factor will not affect the rate of the following reaction? Na(s) + AgNO3(aq) --> NaNO3(aq) +…

A: The factors affecting the rate of the reaction are:Temperature----> The rate of the reaction…

Q: Given the following equation: 3 2 Al(s) + O2(g) → Al2O3(s) 2 Calculate the AH for the following…

Q: Is the curved arrow mechanism reasonable? yes O no Click and drag to start drawing a structure.

A: In the first question, we have to predict that given mechanism is possible or not and also have to…

Q: The correct structural formula for 1,4-dicyclopropylcyclohexane is Select one: O a. O b. O C. O d.…

A: According to IUPAC Nomenclature,Name of alicyclic compounds are obtained by adding prefix cyclo to…

Q: 2 moles CH₂Cl₂ AICI 3

A: In Friedel-Crafts alkylation in benzene ring, any alkyl group is attached with the benzene ring via…

Q: НО ОН OH mCPBA CrO 3, H30+ PCC ? None of the above НО д

Q: The reaction for the decomposition of potassium chlorate which is shown below. 2KClO3 (s)…

A: Balanced chemical equation:2KClO3 (s) ------> 3O2(g) + 2KCl(s) + 78 kJQ = m . s…

Q: Write the balanced equation and use a correct mole ratio to calculate how many milliliters of 0.1154…

Q: Write a balanced chemical equation for the standard formation reaction of liquid acetic acid…

A: Given,The molecule :Liquid acetic acid ( HCH3CO2)

Q: Which of the following compounds is achiral? CH3 CH3 CH3 I OIV OI Oll O III CH3 = OH ..... ||| "OH…

A: An achiral compound does not rotate the plane of a polarized light. It is due to the presence of a…

Q: Part A Test tube 1 Test tube 2 Test tube 3 Part B Test tube 1 Test tube 2 Test tube 3 Reactants…

Q: FeCl3 CI

Q: You are interested in making a buffer with a pH of 7.30. Which of the following weak acid/conjugate…

A: pH = 7.30

Q: of the following reactions will not proceed well as written? O A B C D E O * H3O+ Brz (1eq) NaOH Br2…

Q: This crystal contains calcium ions and fluoride ions. a. What type of crystal is it? b. What is the…

A: A crystal is a three dimensional structure that has constituent ions/atoms/molecules present in an…

Q: If the Ka of a monoprotic weak acid is 3.1x10-6, what is the pH of a 0.15 M solution of this acid?

A: Ka of monoprotic acid (HA) = 3.1×10-6[HA] = 0.15 M

Q: What are the similarities and differences between a polar and non-polar molecule?

Q: 3. Consider the reaction 2 HCl (aq) + Ba(OH)2 (aq) → 2 H₂O ()+ BaCl₂ (aq) AH=-118 kJ/mol a.…

A: a. Moles of HCl = 0.50 molMoles of Ba(OH)2 = 0.30 mol

Concept explainers

Bond Parameters

Many factors decide the covalent bonding between atoms. Some of the bond parameters are bond angle, bond order, enthalpy, bond length, etc. These parameters decide what kind of bond will form in atoms. Hence it is crucial to understand these parameters in detail and understand how changing these parameters affects the kind of bonding or various characteristics.

Bond Dissociation Energy

The tendency of an atom to attract an electron is known as its electronegativity.

Question

Many coloured dyes contain aromatic compounds that have two or more benzene rings. After long-term exposure to the sun, these dyes tend to fade. Propose an explanation for this phenomenon, taking
into consideration the bonding nature of aromatic compounds.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1: Fading of coloured dye

VIEW

Step 2: Phenomenon by which dye colour is getting fade are given below.

VIEW

Solution

VIEW

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

Acridine is a heterocyclic aromatic compound obtained from coal tar that is used in the synthesis of dyes. The molecular formula of acridine is C13H9N, and its ring system is analogous to that of anthracene except that one CH group has been replaced by N. The two most stable resonance structures of acridine are equivalent to each other, and both contain a pyridine-like structural unit. Write a structural formula for acridine.
3) In the mid-1930s, the German theoretical chemist Erich Hückel developed a rule that dealt with the aromaticity of various compounds, which became known as the Hückel Rule. Which (parts) of the compounds listed below are aromatic? Justify your answer based on Hückel's rule. You can treat the rings separately or together as you wish. IMAGE IV: colchicine: a highly poisonous alkaloid, obtained from autumn turmeric and used to treat gout.
3) In the mid-1930s, the German theoretical chemist Erich Hückel developed a rule that dealt with the aromaticity of various compounds, which became known as the Hückel Rule. Which (parts) of the compounds listed below are aromatic? Justify your answer based on Hückel's rule. You can treat the rings separately or together as you wish.
Cyclopropenones are described as having aromatic character. How would you account for this, given that the ring contains three π-electrons?
Draw the structure of the following compounds which include aromatic compounds and the basis for their determination,
Determine the aromaticity of the following compounds and explain your answer.
If a molecule contains an aromatic ring, such as a benzene ring, attached to a non-aromatic ring, how does that affect the overall aromaticity of the molecule?
Cyclopropenones are described as having aromatic character. How would you account for this, given that the ring contains three ℼ-electron
Compare and explain the acidity of phenol, ethanol, acetic acid. (Using pKa, structures of conjugate base)
Interpret the acidity of alcohols on the basis of ground-state polarization and stability of the alcoholate anion(indicate and give symbols for bond polarization)! Compare the relative acidity of ethanol and 2-fluoroethanol!
Discuss the aromaticity of the below compounds? Explain which compound is aromatic, why?
rank the set of compounds and explain briefly