3 How would you prepare this compound? More than one step is necessary. You may use any organic and inorganic reagents for this synthesis. HO Br OH HO.

Q: O On a reaction with acid, 4-pyrone is protonated on the carbonyl-group oxygen to give a stable…

A: The product is stable  due to Aromaticity  in the product. AROMATIC  PRODUCTS ARE STABLE.

Q: Which one of the following sets of quantum numbers is not possible?

A: Formula to find l ( azimuthal quantum number is  (n-1) ,where n is the principal quantum number. ml…

Q: Find all alpha-Hydrogens and draw all possible enol forms: a) b) CH,-C-CH 20

A: Since you have posted multiple questions with multiple sub-parts, we will solve the first three…

Q: -9 at 25 C. Calculate the [OH ] in a 0.10 M solution of pyridine at this temperature. Pyridine…

A: Here we are required to find the concentration of hydroxide formed when weak Base pyridine…

Q: The solubility product for A3B is 2.8 x 10-18, What is the solubility of AgB in water, in moles per…

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Q: 11 Calculate the AG in kJ of the following reaction: NO2 (g) + SO2 (g) --> NO (g) + SO3 (g) Given…

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Q: Fusidic acid is a weakly acidic drug with a pKa of 4.6. It is available as the sodium salt (fusidate…

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Q: sigma bond number

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Q: Assume that at 1000K, magnesium oxide adopts the CsCl structure type. Estimate its lattice energy…

A: Solution -

Q: Using the information given in Table 4, fill the blanks with > or <. IE1 –-- IE2 -- IE3 Li: IE3 IE1…

A: The data given is,

Q: Which of the following acidic solutions require the greatest volume of 0.25 M NaOH to complete the…

A: The solutions given are,

Q: Predict which substance has greater molar entropy. Explain. (a) CH4(g) or CCl4(l) (b) NO2(g) or…

A: Comparison of molar entropies for different compounds

Q: The selectivity óf ióńš tówards the on exchanger increases in concentrated solutions: 1- According…

A: Ans. The  selectivity of ions towards the ion exchanger  increases in concentrated solutions: (1)…

Q: The following equilibrium system has an equilibrium constant of 0.0202. Find the equilibrium…

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Q: 27

A: For the reaction., A (aq) &lt;-----&gt; B (aq) ∆H= - 350kJ/mol

Q: Determine the amount of heat (in kJ) required to convert 7.1 moles of liquid methanol at -42°C into…

A:

Q: 3, Consider the following reactions: Fe2+ + 6 H+ + VO43- > VO2+ + 3 H2O A, what is the oxidation…

A: The common oxidation state of oxygen in most of its compound is -2. The sum of the oxidation states…

Q: What type of titration according to classification includes the quantitative determination of…

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Q: Consider the reaction. A(aq) = 2 B(aq) K. = 7.82 × 10-6 at 500 K If a 3.50 M sample of A is heated…

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Q: THE NORMAL CONCENTRATION OF 0.1 M OF SODIUM NITRITE SOLUTION (NaNO2) IS EQUAL TO Choose one answer:…

A: We know that ,Normality (N)=X × Molarity (M) Where X is no of cations or anoions produced by the…

Q: Draw the structure of zinc (E)-3-cyclohexylacrylate. • Consider E/Z stereochemistry of alkenes. Draw…

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Q: OH Br. FeBr3

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Q: Which of the two elements (Ag and Cu) is higher and which is lower in the series knowing that the…

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Q: The ?sp of cadmium carbonate, CdCO3, is 1.0×10^−12 Calculate the molar solubility, ?, of this…

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Q: 6. Consider the following Newman Projections. Which is the most stable conformation? Which is the…

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Q: 5. The heat from a candy bar's Calories can raise the temperature of a 4.50 kg bucket of water from…

A: We know that heat gain by any substance is given by the following equation  Q=m×S×∆T where  Q = Heat…

Q: 1. what mass in grams of ethylene glycol, C2H602, is needed to lower the capor pressure of water…

A: Given: Vapour pressure of pure water  = 23.8 torr. Volume of water = 100 mL. And vapour pressure of…

Q: Why is it impossible to have only one enantiomer of thalidomide under biological conditions?

A: Thalidomide consists of two enantiomers, R and S. The (R)-enantiomer has sedative effects whereas…

Q: The ionization constant (K») of aniline (CsHsNH2) is 2.35 x 10-5, If 7.285 grams of aniline is…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: At a certain temperature, 0.680 mol SO, is placed in a 4.50 L container. 2 SO, (g) = 2 SO,(g) +…

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Q: Which of the following salts is more solubility in an acidic solution than in a neutral solution?…

A: Caso3 and na2so4 is more soluble in acidic medium than water

Q: 11. Circle the most acidic protons in the molecules, A and B (one for each molecule). Which compound…

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Q: Glucose is broken down in muscle tissue to form lactic acid under anaerobic conditions. The…

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Q: In a study of the decomposition of nitramide in aqueous solution at 25 °C NH,NO,(aq)-N,0(g) + H,0(I)…

A: Here given ln[NH2NO2] vs time plot. The slope is -6.58×10-5 S-1 and y intercept is -1.20

Q: 2. Draw the product alcohol and assign correct stereochemistry for the reaction of NADH at the…

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Q: Chemistry help asap!

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Q: For each of the equations, determine the change in the number of moles of gas, Angas . (NH,),CO3(s)…

A: A chemical reaction is represented by using a chemical equation. In a chemical equation, the species…

Q: 15. Given the following equations and H° values, determine the heat of reaction (kJ) at 298 K for…

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Q: Write the equilibrium-constant expression for the reaction A(s) + 3 B(1) 2C(aq) + D(aq) in terms of…

A: Equilibrium constant expression:

Q: Complete and balance the following redox reaction in acidic solution H2O2(aq) + Cr2O;² (aq) → O2(g)…

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Q: Place the following molecules in order from highest vapor pressure to lowest at 25oC and 0.85 atms.…

A: Vapour pressure of any molecule depends on the 1. Molecular weight. 2. Intermolecular forces.…

Q: fill in the missing reaction component: CuSO4(5H2O) + ______ --> CuSO4 + 5H2O

A: The reaction given is, =&gt; CuSO4·5H2O + _______ → CuSO4 + 5 H2O

Q: What is the pH of 1.0 M solution of H3AsO4? What is the arsenate ion concentration? Ka1=5.5x10-3,…

A: We have to predict the pH as well as the arsenate ion concentration.

Q: 6 Consider the reaction: NO (g) + 1/2 O2 (g) --> NO2 (g) Given the following data: S° (NO) =…

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Q: 8.If the label tells you to apply 3 ounces of Pesto 60 SP per 1,000 sq. ft. then how much would be…

A: Given that, Pesto 60 SP required per 1000 sq. ft = 3 ounces  To find: 1). Quantity of Pesto 60 SP…

Q: At 10 degree Celsius, the vapor pressure of a liquid substance is 6.83 *10^-2Pa, the vapor pressure…

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Q: Molecular Geometry COF2 N2 O₂ H2 Cl2

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Q: Write the rate expression for the following reactions 1. N2e) +3H2e) 2NH3(e) 2. CO2(e) +2NH3(8)…

A: Rate of chemical reaction :- The decrease in concentration of reactants with time or increase in…

Q: For the gas phase decomposition of ethyl acetate, CH;COOC,H,–→CH;COOH + C,H4 the rate constant has…

A: Minimum energy needed for reactant molecules to excite and perform reaction is known as activation…

Q: 9. Using cyclopentanone as your starting material, and using any other reagents of your choice,…

A: The steps involved in the given transformation are 1. Abstraction of proton by base 2. Nucleophilic…

Reactions of Ethers

Ethers (R-O-R’) are compounds formed by replacing hydrogen atoms of an alcohol (R-OH compound) or a phenol (C6H5OH) by an aryl/ acyl group (functional group after removing single hydrogen from an aromatic ring). In this section, reaction, preparation and behavior of ethers are discussed in the context of organic chemistry.

Epoxides

Epoxides are a special class of cyclic ethers which are an important functional group in organic chemistry and generate reactive centers due to their unusual high reactivity. Due to their high reactivity, epoxides are considered to be toxic and mutagenic.

Williamson Ether Synthesis

An organic reaction in which an organohalide and a deprotonated alcohol forms ether is known as Williamson ether synthesis. Alexander Williamson developed the Williamson ether synthesis in 1850. The formation of ether in this synthesis is an SN2 reaction.