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

Q: If the pKa of the indicator is approximately 6, to which of the following equivalence point will it…

A: A suitable indicator should have pH of color transition is given by the equation of pH.…

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

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Q: The following observations are made about a diprotic acid H2A: (i) A 0.10 M solution of H2A has…

A: pH of a 0.10 M solution of H2A is 3.10 and 0.10 M solution of a salt NaHA is acidic.

Q: On acidity and basicity of aqueous solutions, the following relationships are valid, except…

A: Given : We have to tell the incorrect statement.

Q: At what pH will the concentration of a compound with a pKa = 3.7 be 1000 times greater in its acidic…

A: The answer to both the questions are given as:

Q: The acid dissociation constant (Ka) of a 2.5 L weak acid has a value of 2.56 ×10^-4. Determine the…

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Q: Hypochlorous acid (HOCI) is the main disinfecting form of "active chlorine" or bleach. a. Using its…

A: a)   HOCl dissociates in aqueous solutions as per the following reaction:   HOCl↔H++OCl-

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: What would the pH be after addition of 19.15 mL of 0.1000 M NaOH to 25.00 mL of 0.1000 HA (a weak…

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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: The Ka of formic acid (HCHO2) is 1.8 x 10^-4. What is the pH of a 0.35M solution of sodium formate…

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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: A weak base has Kp 6.5x10-6. Calculate the pKa of the conjugate acid. Express your answer to two…

A: The dissociation constant of an aqueous solution of weak acid is known as the acid ionization…

Q: Calculate the pH of the following solutions:4 0.020M potassium acid phthalate solution; Ka = 1.3 x…

A: SOLUTION: We have to calculate the pH and pKa values for the given compound.

Q: At what pH is 50% of a compound, with a pKa = 7.3, in its basic form?

A: The Henderson-Hasselbatch equation makes it possible to calculate precisely how much compound is…

Q: 2. a. What is the ratio of H2PO4 to H3PO4 at a pH of3? Phosphoric acid, pKal =2.12, pKa2 = 7.21, and…

A: #2(a): H3PO4(aq) is a weak acid and H2PO4-(aq) is a conjugate base of the weak acid. Hence…

Q: What is the ratio of acetate ion to acetic acid (Ka = 1.76×10–5) in a solution containing these…

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Q: Write the Henderson–Hasselbalch equation for a solution of propanoic acid (CH, CH, CO,H, pKa =…

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Q: Calculate the pH of a solution that is 0.214 M acetic acid and 0.152 M sodium acetate. The Ka of…

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Q: Hydrogen cyanide, HCN, also called hydrocyanic acid is a weak acid with a pKa near 10. What would be…

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Q: the Ka for acetic acid is 1.8x10^-5. What is the pKa of this weak acid?

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Q: Calculate the pH at 25 °C of a 0.98M solution of sodium benzoate (NaC,H,CO,). Note that benzoic acid…

A: The question is based on the concept of salt hydrolysis. sodium benzoate is the salt of weak acid…

Q: Which of the following sequences show an increasing strength of acidity? I. HNO2 (Ka=4.0 x 10-4)…

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Q: 1. Calculate the pH of a 1 L solution containing 6 mL of 1.5 M acetic acid and 5 ml of 0.4 M sodium…

A: According to Henderson- hasselbalch equatlon.pH=pKa+log[salt ][acid]..........1stGiven,pKa=4.766ml…

Q: Phosphoric acid (H3PO4) is triprotic, with pKa's of 2.14, 6.86, and 12.4. The ionic form that…

A: Given, Phosphoric acid (H3PO4) is triprotic with with pKa's of 2.14, 6.86, and 12.4.We are asked…

Q: (b) 0.15 moldm of benzoic acid (CeHsCOOH; Ka of benzoic acid = 6.3 x 10-5 moldm- %3D 3)

A: Acid dissociation constant measures the acidic strength of an acid. Higher the value of Ka, higher…

Q: 30ml of 0.06M solution of protonated form of anion amino acid methionine (H2A+) is treated with0.09M…

A: Answer: Step 1: The amino acids have both acidic and basic groups. At high pH they behave like bases…

Q: Ka for ethanoic acid is 1.7*10^-5 moldm-3. Show by calculation that the initial pH in experiment B…

A: Using the equilibrium concentration of hydronium ion, H3O+, pH can be calculated.

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

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Q: Calculate the pH at 25 °C of a 0.67M solution of potassium acetate (KCH3CO₂). Note that acetic acid…

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Q: Calculate the pKa for the weak acids that have the ff. Ka values. a. 2.3 x 10 -6 b. 1.9 x 10 -8 C.…

A: The Ka values indicate how willing an acid is to dissociate and make available the proton/s it has.…

Q: 17, Calculate the Ka of a 0.010M acid solution which is 19% ionized Group of answer choices 1.9 x…

A: Answer:- This question is answered by using the simple concept of calculation of ionisation constant…

Q: The Kb for ethylamine (C2H5NH2) is 5.6 x 10-4. What is the pH of a 0.020 M solution of ethaylamine?

A: The reaction is –              C2H5NH2 + H2O↔C2H5NH3+ + OH-I                 0.02…

Q: if the Ka of acetic acid is 1.8 x 10-5, what is the Kb of the acetate ion?

A: Ka = 1.8 x 10-5    , Kb= ? We know Kw = Ka x Kb

Q: Phenolphthalein indicator is a weak acid with Ka = 10-9 mol/dm-3. It is colourless while its…

A: Phenolphthalein indicator is a weaker acid it's work in higher pH range between 10 to 12.  In acidic…

Q: Calculate the pH at 25 °C of a 0.26M solution of potassium acetate (KCH₂CO₂). Note that acetic acid…

A: Concentration of KCH3CO2 = 0.26 M pKa of HCH3CO2 = 4.76

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: What is the reason for finding the 1/2 equivalence point? Select one: a. To determine the moles of…

A: The half-equivalence point is the point at which half of the acid has reacted with the base for…

Q: Given two bottles of which contains a 0.1M solution of an unidentified acid. One bottle is labeled…

A: Two bottles contain 0.1 M of the unidentified acid as follows- Bottle 1: Ka = 7.2  x 10-4 Bottle 2:…

Q: If you mix equal molar quantities of NH3 (Kb = 1.8 x 10-5) and CH3CO2H (Ka= 1.8 x 10-5), the…

A: Given that the solution contains equal molar concentrations of NH3 and CH3COOH. Also given Kb of NH3…

Q: -HO- + NaNH2 pKa = 9.89 pKb = 3.25 %3D %3D pKa of conjugate acid = 25

A: Welcome to bartleby !

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: What is the ratio of acetate ion to acetic acid (Ka = 1.76x10-5) in a solution containing these…

A: Given, Ka for acetic acid = 1.76×10-5 We have to calculate the ratio of acetate ion to acetic acid…

Q: The ionization constant,  Ka, for benzoic acid is 6.28 ×10-⁵. What is the pKa of this acid? a)…

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Q: The Ka of acetic acid is 1.8 X 10-5.  The Kb of the acetate ion is

A: Acetic acid is a weak acid and its conjugate base is acetate ion. The reaction of conjugate acid-…

Q: What would be the pH of a 100mL solution containing 0.24M formic acid (HCHO2; Ka= 1.8x10 -4) and…

A: Formic acid (a weak acid) and sodium formate (Salt of formic acid with NaOH) forms an acidic buffer…

Q: If an acid has a Ka of 2.12 x 10-3, what is its pKa?

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Q: Calculate the pH of 0.65 M of a weak acid HA with Ka = 2.56 x 10 -6.      5.59     2.89…

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Q: The pH of 0.010 M trimethylamine is 10.88. What is the value of Kb for this base? 1.3 * 10-11…

A: we have given that   Concentration of trimethylamine = 0.010M pH = 10.88 pOH = 3.12   (CH3)3N   +…

Q: The pKa of HX is 9.34.  Calculate the pH of a 0.418 M solution of HX.

A: We are authorized to answer one question at a time, since you have not mentioned which question you…