If the pKa of a weak acid is 3.74, what is the Ka of the acid? Show all work/calculations.

Q: Determine [H30+] of a 0.210 M solution of formic acid (Ka = 1.8 × 10-4).

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Q: Calculate the pH of a 0.100 M solution of alanine prepared from the form shown below. pKa (-COOH) =…

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

Q: 2. Calculate [A]/ [HA] ratio of phosphoric acid species presents in blood at pH=7.4. Identify…

A: Henderson Hasselbach equation is used in the preparation of a buffer.  pH = pKa + log [base][acid]…

Q: Ka for acetic acid is 1.8 x 10-5. What is the first digit of the pKa value for acetic acid?

A: Ka is a dissociation constant of acid Here the acid is given acetic acid Formula for pKa = -log ka…

Q: omework ubmitted Aug 8 at 11:15pm 1/1 pts Question 13 The [OH ] and the pH of 0.035 M KOH at 25 °C…

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Q: A weak base has Kb = 3.3x10-6. Calculate the pKa of the conjugate acid. Express your answer to two…

A: To solve this problem,first we have to calculate the value of Ka then we will calculate the value of…

Q: Assuming that base (B:) and acid (AH) are mixed in equal concentrations and using pKa values of acid…

A: Let the initial concentrations of base and AH be 1 M each. The pKa of AH is 3.5 and the pKa of BH+…

Q: In my slide, there is a table summarizing the pKa values for different acids. (1) when ranking the…

A: (1)   The pKa quantifies how strongly a positive charge is retained by something like a Bronsted…

Q: The pH of a solution that is 0.5 in MA and 0.3 in HA is 5.40; determine the pKa of the acid.

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Q: Phosphoric acid (H3PO4) is tribasic, with pKa's of 2.14, 6.86, and 12.4. The charge of the ionic…

A: Given: pKa's of phosphoric acids are 2.14, 6.86 and 12.4. And the pH of the solution = 8

Q: A weak acid has KĄ = 4.31 x 10-4. What is the pKĄ of this acid? Report your answer to at least 1…

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Q: The Ka of a weak acid is 3 x 10^-12 What is the pKa of this acid?

A: Ka which is dissociation constant of acid is given  3*10^-12  Pka = ?

Q: Calculate the pH of a 0.10 mol/L solution of ascorbic acid, H2C6H6O6(aq) and the equilibrium…

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Q: The pKa values of 4 acids are given below. Acid              HA1            HA2          HA3…

A: More is the value of pKa weaker is the acid and higher is its pH and vice versa. Weaker is the base…

Q: Interconverting Ka and pKa-

A: The term pKa is nothing but the negative logarithm of the acid dissociation constant (Ka), taken to…

Q: Calculate the acid ionization constant (pKa) for the acid with a 0.775 M solution of a weak acid…

A: Given data of the following:: [weak acid] = 0.775 M = [HA]  pH = 3.38 pka = ?

Q: Given the Ka values, estimate the pKa value of each of the following acids without using a…

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Q: can you help me calculate the percent error for my pKa? my pKa = 6.79 my Ka = 1.62 x 10^-7 the…

A: The experimental value of pKa of NaHSO3 = 6.79 NaHSO3 is a single deprotonated form of H2SO3 whose…

Q: For a weak acid with a pKa of 6.0, show how you would calculate the ration of acid to salt at pH 5.

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Q: What is the pKa of a weak acid with a Ka of 4.7 X 10-6?

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Q: One way to determine the predominant species at equilibrium for an acid-base reaction is to say that…

A: The given data is:

Q: A beaker contains a total concentration of 0.73 molar of weak acetic acid with pKa = 5.55 and pH =…

A: We would show dissociation equation of acetic acid and write ICE table to calculate the…

Q: What is the pH of a solution that is 0.28 M in acetic acid, HC2H3O2, and 0.69 M in sodium acetate,…

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Q: What is the pKa value of Tris-HCl?

A: The molecular formula of Tris-HCl is: NH2C(CH2OH)3 ·HCl

Q: A weak base has Kg = 3.26 x 10-2. What is the pKB of this base? Report your answer to at least 1…

A: The pKB of a base is the negative logarithmic of KB value of the base.

Q: A weak acid solution with concentration 0.020 M has a pH of 3.7, what is the pKa of this acid?

A: Given pH = 3.7 Initial Concentration = 0.020 M

Q: If the Ka of the conjugate acid is 2.78 × 10-7 , what is the pKb for the base

A: Based on Bronsted theory, whenever a base accepts a proton that is H+, the formation of conjugate…

Q: What are some possible sources of error in determining the Ka value of an unknown acid except for…

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Q: The Kb of carbonate is 1.8×10−4. Calculate the Ka of its conjugate acid.

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Q: A student determines that the value of Ka for H2SO3 = 2.3×10-2 . What is the value of pKa?

A: pKa is the measure of determining the strength of the acid. Lower the value of pKa, stronger will be…

Q: Determine the pka of an acid whose concentration is 0.100M and pH is 2.86.

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Q: The pka values of 4 acids are given below. Acid НА1 НА2 НАЗ НА4 pKa 4.76 3.45 7.63 5.23 Which of the…

A: More is the value of pKa weaker is the acid ,and vice versa.

Q: 3. Calculate the pK, of hypobromous acid from its Ka value. (Refer to Appendix H)

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Q: f the Kb of a weak base is 8.7E-9, what is the Ka of its conjugate acid?

A: Conjugate acid is defined as a chemical compound formed when an acid donates a proton (H+) to a…

Q: Assuming that base (B:) and acid (AH) are mixed in equal concentrațions and using pka values of acid…

A: In order to solve this question, we will be writing the reaction first and then finding out the…

Q: The value of Ka for acetic acid is 1.75 X 1025. Find Kb for acetate ion.

A: Given information,       Ka for acetic acid is 1.75 X 1025

Q: Acetic acid has a Ka value of 1.8×105, what is its Kb value? Section а. 5.6x10-10 b. 1.8×10-19 с.…

A: Given that, Ka= 1.8×10-5 Then, Kb= ?

Q: Consider two acids: CH;CO,H (benzoic acid, pK, = 4.2) and CH,CO,H (acetic acid, pK,= 4.8). Which…

A: According to Bronsted-Lowry concept  Acid is a substance which donates proton to other and forms its…

Q: The Kb of a weak base, Z, is 3.75 x 10−12.  What is the Ka for its conjugate acid, HZ+?

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Q: d. The Ka of acetic acid (found in vinegar) is 1.8×10-5. Then the pKa of formic acid is

A: Acid Dissociation constant :- The relative strength of an acid is determined by its dissociation.

Q: Calculate the Ka of HA given A−(aq)+H2O(l)⇌OH−(aq)+HA(aq)          Kb = 9.60×10-7

A: Given reaction : A-(aq.)  +  H2O(l)  ⇌  OH-(aq.)  +  HA(aq.) Kb = 9.60×10-7 We can use the relation…

Q: for a 0.10 M solution of a weak acid, HA, with pKa=10, which of the following is true? a. [HA]=[A-]…

A: Weak acids undergo partial dissociation in water.

Q: Use Pauling’s First and Second Rules to determine the pKa values of bromic acid and selenous acid as…

A: Explanation to the correct answer is given below.

Q: Calculate the pH at 25°C of a 0.59M solution of potassium cyanide KCN . Note that hydrocyanic acid…

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Q: % A- vs pH 100 90 80 70 60 & 50 40 30 20 10 ... ... .. 8. 10 11 PH Use the data above to calculate…

A: The %A- v/s pH plot given is,

Q: molar of weak acetic acid with pKa = 4.97 and pH = 3.50. Calculate the molar concentration of the…

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Q: Calculate the pKa of the weak acid HA, given that a solution that is 0.357 in HA and 1.24 in A- has…

A: Buffer solution is made of weak acid and it's conjugate base or weak base and it's conjugate acid.

Q: The pKa values of some hypothetical acids (HX, HY, HZ, HG) are shown below: HX pka=2.50,  HY…

A: Bronsted-Lowry theory of acids and bases :-  According to this theory Acid is a substance which can…

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.