Q: The acids are: isopropanol, ethyne, and phenol. Which acid will NOT be deprotanated by NaOH and…
A: Three organic acids,, which are to be distinguished based on their reactivity.
Q: Write the Ka2 reaction of sulfuric acid (H2SO4) and the Kb2 reaction of disodium oxalate (Na2C2O4)…
A: Ka2 is the second rate dissociation constant . Kb2 is the second base dissociation constant.
Q: Identify the acid and conjugate base in each reaction. Calculate the pKA for each acid. List them in…
A: Conjugate acid-base pair are considered differ only by H+ ion. Acid form corresponding conjugate…
Q: Why is the pH of sodium ethanoate greater than 7?
A: The structure of sodium ethanoate is as follows:
Q: The pKa values of the conjugate acids of 2-aminopyridine (6.71) and 4- aminopyridine (9.11) are as…
A: It is given that 2-amino pyridine conjugate acid has a pKa value of 6.71 and 4-aminopyridine…
Q: Q- Describe the PreParation of 400mLof 6F Hi PO4 from the commercial Salution which is 85 (W/w)…
A: The question is based on the concept of solution preparation. we have been given a stock solution of…
Q: 2- The spectral characteristics of phenols and aromatic amines change with the change of pH of the…
A: When we study the interaction of electromagnetic radiation with matter then this study is known as…
Q: V. Using your knowledge on structural effects, account for the following observations by giving…
A: Lewis acid : accepts electron pair Lewis base : donates electron pair
Q: 1. excess MeMgBr > 10 eq.) OMe HO 2. acidic workup
A: The given compound is treated with Grignard reagent and then acidic workup. The Grignard reagent…
Q: The dissociation constant of ethanolamine is 2.77 x 10 – 5 at 25 °C. Calculate its pKb value.
A: Given data: The dissociation constant of ethanolamine = 2.77 x 10 – 5. To find: The pKb value.…
Q: Draw the structure of the predominant form (principal species) of 1,3-dihydroxybenzene at pH 9.00…
A: The structure of dihydroxy benzene is as follows,
Q: Show the reaction and equilibrium expression for the basic dissociation of trimethylamine. Given…
A: The pH is scale for determining the acidity of a solution. If the pH of a solution is below 7 then…
Q: Molecules like acetamide (CH3CONH2) can be protonated on either their O or N atoms when treated with…
A: Molecules like acetamide (CH3CONH2) can be protonated on either their O or N atoms when treated with…
Q: 2. Answer these questions about separating benzoic acid (pKa = 4.2) and aniline (which is basic, pKa…
A: Reverse phase high pressure liquid chromatography (HPLC) is a separating process where a non-polar…
Q: For a given acid HA, it was determined that at pH 6.0 the concentration of the conjugate base [A]…
A: Percent ionization of HA = [H+]/[HA] *100% pH =6.0 pH = -log[H+] 6.0 =-log[H+] [H+] = inv log…
Q: In the gas phase, the base strength of amines increases regularly along the series NH3 < CH3NH2 <…
A: Gas phase basicity : Basicity of a compound depends on the availability of l.p. on N atom. Greater…
Q: Physiological pH in humans is pH = 7.3. At this pH, would cellular carboxylic acid citric acid (Ka1…
A: Using Henderson's equation we get answer
Q: 1. Write the equilibrium-constant expressions and obtain numerical values for each constant in (a)…
A: We'll answer the first question with three sub parts, since the exact one wasn't specified. Please…
Q: What is meant by the salting out effect? Illustrate.
A: Salting out effect : Most of the protiens are less soluble at high salt concentrations, this effect…
Q: Calculate the [H3O+][H3O+] of oranges with pH=3.50pH=3.50 .
A: We are having oranges with pH=3.50 pH = - log [H3O+]
Q: What is the pH of a 0.050 M solution of triethylamine with the Kp value of 5.3x 10-4?
A:
Q: Write the equilibrium-constant expressions and obtain numerical values for each constant in (a) The…
A: The acids are the compounds that lose H+ and bases are the ones that accept H+. The acidic salt also…
Q: V. Using your knowledge on structural effects, account for the following observations by giving…
A: The Bronsted-Lowry acid-base theory was purposed by Bronsted and Lowery is called Bronsted-Lowry…
Q: ОН OH NH HO, C33H35FN2O5 F
A: We have given neutal molecule C33H35FN2O5 .
Q: Which of the compounds below form water soluble salts (quantitatively) when added to a saturated…
A: In the given set of molecule only compound a will form slat with sodium bicarbonate as it contains…
Q: A aqueous solution (benzoic and sodium benzoate) has a pH of 5.1, Its dissociation constant of…
A:
Q: The range of the evidence is 6-8 if the value of its dissociation constant is о 1 x 10-9 1 x 10-7 1…
A: Range given, 6-8 What is the value of dissociation constant ?
Q: Verify that the equilibrium position for the reaction between phenol and hydroxide ion is on the…
A: Given : Verify that the equilibrium position for the reaction between phenol and hydroxide ion is on…
Q: An aqueous solution of benzoic acid and sodium benzoate has a pH of 5.1. The dissociation constant…
A: Given, Dissociation constant(Ka) = 6.5x10-5
Q: 6. The following compound is a carboxylic acid that contains a bromine atom: C4H,O2B.. The peak at…
A: Given carboxylic compound is C4H7O2Br. The structure of the compound has to be determined.
Q: Calculate the pH of 1.25x10^-2 M of the decongestantephedrine hydrochloride if the pKb of ephedrine…
A: Ka value is calculated.
Q: Propose you are given a mixture of naphthalene, propanoic acid, and diethyl amine. Explain, using a…
A: The chemical compounds Napthalene, propanoic acid and diethyl amine present in given mixuture is…
Q: The gas-phase basicity of triphenylamine (876.4 kJ mol-1) is less than that of triphenylphosphine…
A: Given that The gas-phase basicity of triphenylamine is 876.4 kJ mol-1 The gas-phase basicity of…
Q: Fill in the left side of this equilibrium constant equation for the reaction of 4-bromoaniline…
A: As 4-bromoaniline (C6H4BrNH2) is weak base, it does not dissociate completely in water. The…
Q: The acid dissociation constant K, of trimethylacetic acid (HC (CH3),CO2) is! 9.33 x 10. Calculate…
A:
Q: OH 1. CO2, aq. NAOH 2. H30+
A: This is Kolbe Schmidt reaction to convert phenol into Salicylic acid
Q: Complete the following reactions and hence identify the nature of the acid-base interaction and the…
A: We have been asked to complete the given reaction and to identify the nature of the acid base…
Q: What is the property of Al(OH)3 which, when reacting with organic dyes, serves as confirmatory test?
A: The confirmatory test is used to identify the specific ions or compounds in a solution. It generally…
Q: 15.What would be the pH of a 0.25 M solution of phenylamine (C6H5NH2) at room temperature? The Kb of…
A: Given: Concentration (C) of C6H5NH2 = 0.25 M Kb = 4 × 10-10 As C6H5NH2 is a weak base So POH…
Q: 2. Describe how you would prepare the following solutions: c) 2L of 4% (v/v) acetic acid (CH;COOH)…
A: %V/V is defined as volume of solute devided volume of solution in ml .
Q: Write the equilibrium-constant expressions and obtain numerical values for each constant in…
A: (a) Aniline is a base; therefore the Kb will need to be calculated from the Ka which is equal to.…
Q: For acid-base extractions: Explain what result would you expect if you accidentally extracted the…
A: The true order for the base/acid extraction given in this problem, 1st -NaHCO3, 2nd -NaOH, and 3rd…
Q: Using your knowledge on structural effects, account for the following observations by giving…
A: Boron trifluoride is a stronger lewis acid than trimethyl borate.
Q: Conductivity of 2.5 X 10-4M methanoic acid is 5.25 X 10-5 S cm-1 Calculate its molar conductivity…
A:
Q: A 50.00 mL sample of white dinner wine required 28.54 mL of 0.03867 N NaOH to achieve a…
A:
Q: d) Write an expression which shows how the acid dissociation constant, Ka, of ethanoic acid…
A:
Q: At what pH is a reductive amination reaction performed? O 5 6. O 7
A: 1) Reductive amination reaction carry out under neutral to weakly acidic conditions pH less than or…
Q: What is the complete balanced equation and then the Keq expression for the following: 1.…
A: Answer: Since, Mg is more reactive metal then hydrogen, therefore it will displace, hydrogen from…
Q: Preparation approximately 0.1N of Hcl 250ml
A: We have to Prepare approximately 0.1 N Of HCl 250 ml Here 0.1 N HCl is considered as 0.1 M HCl
Step by step
Solved in 2 steps
- I'm asked to "assume that ozempic is in a solution at pH = 7. Draw the functional groups at their correct protonation form". For this, would I make all of the carboxyl groupsgo from COOH to COO-? and then the amide groups go from CONH to CONH3 + ? What about ether groups (COC) ?Addition of phenolphthalein to an unknown colorlesssolution does not cause a color change. The addition ofbromthymol blue to the same solution leads to a yellowcolor. (a) Is the solution acidic, neutral, or basic? (b) Whichof the following can you establish about the solution: (i) Aminimum pH, (ii) A maximum pH, or (iii) A specific rangeof pH values? (c) What other indicator or indicators wouldyou want to use to determine the pH of the solution moreprecisely?Benzoic acid (C6H5COOH) and aniline (C6H5NH2) areboth derivatives of benzene. Benzoic acid is an acid withKa = 6.3 x10-5 and aniline is a base with Ka = 4.3 x10-10. (a) What are the conjugate base of benzoic acid andthe conjugate acid of aniline? (b) Anilinium chloride(C6H5NH3Cl) is a strong electrolyte that dissociates intoanilinium ions (C6H5NH3+) and chloride ions. Which willbe more acidic, a 0.10 M solution of benzoic acid or a 0.10M solution of anilinium chloride? (c) What is the value ofthe equilibrium constant for the following equilibrium?C6H5COOH(aq) + C6H5NH2(aq) ⇌ C6H5COO-(aq) + C6H5NH3+(aq)
- 1) Complete the following reactions and identify the acid, base, conjugate acid and conjugate base. CH;CH,NH2 (aq) + H2O (1) a) CH;COOH (aq) + H,O (I) b) c) Identify the conjugate base and conjugate acid of each of the following. Conjugate Base Molecule Conjugate Acid HCO3 H20 HSO4- H2PO4C6H5NH2 + H2O <-> C6H5NH3+ + OH-. Aniline, a weak base, reacts with water according to the reaction. (a) a sample of aniline is dissolved in water to produce 25.0 mL of 0.10 m solution. The pH of the solution 8.82. Calculate the equilibrium constant, Kb, for this reaction (b) What is the percent disassociation for the solution in part (a) (c) 25.0 mL of 0.10 HCI was then added in a titration experiment. What is the pH at the equivalence point?Using the table of the weak base below, you have chosen Pyridine as your weak base in the buffer solution. You have already added enough of the conjugate acid salt to make the buffer solution concentration at 0.62 M in this salt. The desired pH of the buffer should be equal to 4.5. Values of K, for Some Common Weak Bases Conjugate Acid Name Formula Ammonia Methylamine Ethylamine Aniline NH3 CH;NH2 CH;NH2 CH;NH, C;H;N NH,+ CH;NH;* CH$NH;* CH;NH;* C;H;NH* 1.8 × 10-5 4.38 x 10-4 5.6 x 10-4 3.8 x 10-10 1.7 x 10-9 Pyridine 3. Compute the concentration of the weak base in Molarity. (Write your answer in 3 decimal places without the unit).
- (a) Given that Ka for acetic acid is 1.8 x 10-5 and that forhypochlorous acid is 3.0 x 10-8, which is the stronger acid?(b) Which is the stronger base, the acetate ion or the hypochloriteion? (c) Calculate Kb values for CH3COO- and ClO-.4. A student has prepared 0.05 M solution of CH3-C=CH and has added to it 0.05 M solution of potassium tert-butoxide (K" O-C(CH3)3). (i) Write the equation for the acid-base reaction that might occur. (ii) With curved arrows track the movements of electron pairs. (iii) Assign Base, Acid, Conjugate acid for the base, Conjugate base for the acid. (iv) Calculate the percentage of deprotonated methyl acetylene taking into account that pKa of the conjugate acid of potassium tert-butoxide equals 18 and pKa of methyl acetylene equals 24.2) Calculate the pH of a sólution prepared by dissolving 0.150 mol of acetic acid and 0.300 mol of sodium acetate in water sufficient to yield 1.00 L of solution. The Ka of acetic acid is 1.76E-5.
- NaHCO3 can deprotonate benzoic acid but cannot deprotonate phenol. On the other hand, NaOH can deprotonate both benzoic acid and phenol. Given this information, rank the molecules numbered I to V in order of decreasing acidity. COH cOH он H,0 H,CO, IV CH3 II I II (A) V > II >I > III > IV (В) II > 1 > V > III IV (C) II > V >I > IV > IIPhenylamine is an aromatic amine that is used in the manufacture of dyes. When absorbed through the skin itcauses the Fe+2 in hemoglobin to become oxidized into Fe+3, resulting in the formation of methemoglobin whichcannot bind to or transport oxygen. Phenylamine is soluble in water and acts as a weak base.C6H5NH2 (aq) + H2O (ℓ) ⇋ C6H5NH3+ (aq) + OH- (aq)a. When you measure the concentrations of the ionized substances you find them to be:[C6H5NH2] = 0.234 mol/L [C6H5NH3+] = 2.8 x 10-5 mol/L [OH-]= 2.8 x 10-5 mol/LIf the Kb is 4.27 x 10-10, is the reaction at equilibrium? If not, which direction does it need to move (rightor left) to reach equilibrium? Explain. b. At equilibrium the concentrations of the ionized substances are:[C6H5NH2] = 0.0537 mol/L [C6H5NH3+] = 4.79 x 10-6 mol/L [OH-]= 4.79 x 10-6 mol/LIf this reaction is taking place in a 2.0L container, and 1.5 moles of phenylamine were added to thereaction, what will the new concentrations of the three ionic species be when…(a) Tsomane and Nyiko were given a task of synthesising methylenecyclohexane 2. After a brief discussion with each other, Tsomane proposed Method A to synthesise 2 from cyclohexanone 1 while Nyiko proposed Method B that started from hydroxymethylcyclohexane 3. Each student believed that their proposed method is better than the other. (Scheme below) (ii) Ph Ph Ph 640 THF A 1 B H₂SO4 100 °C 3 OH In analysing both these methods, are there other possible alkene products other than methylenecyclohexane 2?
