Q: What percent of imidazole is protonated at physiological pH (7.4)?
A: pH= 7.4. We have to find the percentage of protonated imidazole at the pH of 7.4.
Q: 6. As the pKa of a proton donor (acid) increases (becomes numerically larger), the nucleophilicity…
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Q: At what pH is 50% of a compound, with a pKa = 7.3, in its basic form?
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Q: Write the equilibrium-constant expressions and obtain numerical values for each constant in (a) the…
A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…
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 the pH of a solution
A:
Q: The base-dissociation constant of ethylamine (C2H5NH2) is 6.4 × 10-4 at 25.0 °C. The [H+] in a 1.6 ×…
A: [H+ ] [ OH-] = 10-14 P H + POH =14 [ OH-] =10-14 /[H+ ] [H+ ]= 10-14 [ OH-]
Q: Write the equilibrium-constant expressions and obtain numerical values for each constant in (a) The…
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Q: 6. What is the pH of 0.03 mol dm- ethanoic acid? Ka = 2 x 10- mol dm-
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: The base protonation constant K, of allantoin (C,H,N,O,NH,) is 9.12 x 10 °. Calculate the pH of a…
A: Given Initial Concentration = 0.47 M Kb = 9.12 × 10-6
Q: Which is a stronger acid: one with an acid dissociation constant of 3.4 X 10-3 or one with an acid…
A:
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
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Q: give the pH values at the end point of: i.bomocresol green ii.red phenol iii.phenophthalein in…
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Q: NaCH3COO ,sodium acetate NaC6H5COO , sodium benzoate NaCH3CH2 COO sodium propionate NaHCO 3 , sodium…
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Q: Calculate the fraction of the triprotic acid in each of its forms at pH 5.13.
A:
Q: Give the detailed step-by-step procedure of the preparation of 20 mL of 2 M
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Q: The pH of 2-methylpropanoic acid is greater than that of 2-chloropropanoic acid. True or false
A: Detail description is given below
Q: The base protonation constant K, of 1-H-imidazole (C,H,N,) is 9.0 x 10°. -8 Calculate the pH of a…
A:
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: Use electronic factors to explain which oxygen is preferentially protonated in carboxylic acids
A: As pe the bartleby expert guidelines, I am allowed to answer first one question at a time. Please…
Q: The base protonation constant K, of 1-H-imidazole (C;H,N,) is 9.0 x 10-8. Calculate the pH of a 0.57…
A: We have to predict the pH of solution.
Q: The base-dissociation constant of ethylamine (C2H5NH2) is 6.4 x 10* at 25.0 °C. The [H*] in a 1.6 x…
A:
Q: pH
A:
Q: Which is a stronger acid: one with an acid dissociation constant of 3.4 * 10-3 or one with an acid…
A: Acid dissociation constant (Ka) helps in determining the relative strengths of acids. Example-…
Q: The equilibrium constant for the reaction C6H5COOH(aq) + CH3COO"(aq) s C6H5CO0¯(aq) + CH3COOH(aq) is…
A:
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: As a stabilizer in a 3% solution of hydrogen peroxide is introduced: A) sodium bicarbonate B)…
A: The compound which is introduced to stabilizer in 3% solution of hydrogen peroxide is given below.
Q: Which compound, when dissolved in water, would cause the pH of the solution to be greater than 7? A)…
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Q: What is the 3rd stepwise equilibrium constant expression (Ka3) for phosphoric acid H3PO4?
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Q: A compound have pKa 3 , what will be its dissociation constant at pH 10 and at pH 1 ?
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Q: if the pKa value for p-nitrophenol is 7.08, what fraction of it exists in its ionized form at (a) pH…
A: Henderson's equation for buffer solutions is :
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A:
Q: A) Complete the following sequence with the appropriate reactant X and product Y. State the IUPAC…
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Q: A “generic" diprotic acid has pK,'s of 4.85 and 6.21. Find Ki and K12 for the fully-deprotonated and…
A: SOLUTION: Step 1: The general equation of dissociation of diprotic acid is as follows:
Q: What Is the pH of a solutlon of 3.7 M HBr? A -0.651 B) -0.748 0.568 D) -0.568 E 0.748
A: Given that: [HBr] = 3.7M HBr is strong acid.
Why is the pH of sodium ethanoate greater than 7?
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- Because phenol (C6H5OH) is less acidic than a carboxylic acid, it can be deprotonated by NaOH but not by the weaker base NaHCO3. Using this information, write out an extraction sequence that can be used to separate C6H5OH, benzoic acid, and cyclohexanol. Show what compound is present in each layer at each stage of the process, and if it is present in its neutral or ionic form.5. At 25°C, calculate the molar H3O+ and OH-1 concentrations of the following:c. 0.200 M C6H5COONa (sodium benzoate)d. 0.0860 M KOHe. 0.0689 M HClHow many ions are formed during the dissociation of 500 molecules of carbonic acid, if it dissociates in the first degree by 20%, and in the second degree by 1%? Explain your answer.
- if the pKa value for p-nitrophenol is 7.08, what fraction of it exists in its ionized form at (a) pH 7, and (b) pH 9?Write the two acid-base equations that allow the separation of a mixture of biphenyl and N, N-diethylaniline, a liquid that is a base and not an acid. (6)At pH 11 the phenol deprotonates, Why is the pka now 10, give relationship between pka and pH during deprotonation
- What are the concentrations of pentachlorophenol and pentachlorophenate if a 0.2 mm pentachlorophenol solution is adjusted to a pH of 7.0? Also, determine a for these conditions. PKa of pentachlorophenol-4.75 at pH=73 g of HA acid is dissolved in water to produce a 1 dm³ solution. If the change of acid concentration is just 2% from the initial concentration, what is the acid-ionization constant for this acid? (Relative molecular mass of HA acid is 60)What would the concentration of CH3COO be at pH 5.3 if 0.1M CH3COOH was adjusted to that pH.