Which of the following is the correct expression for Ka? Assume the acid dissociation is                                        HA + H2O <--> H3O+1 + A-1

Q: 4. The acid dissociation constant Ka equals 1.26 x 102 for HSO4 and is 5.6 x 10-10 for NH4. Which…

A: Form the given information it is confirmed that HSO4- is a stronger acid than NH4+ since, its pKa…

Q: 5. At 25°C, calculate the molar H3O+ and OH-1 concentrations of the following: b. 0.0600 M NH3 c.…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: what are the molar H3O+ and OH- concentrations in (a very brief but concise solution will do)…

A: 0.0300 M HOCl 0.0600 M butanoic acid 0.200 M NaOCI

Q: Find the concentration of a solution of the a weak base pyridine of pH 7.588, given Kb = 1.70 x 10-9

A: Given that  pH = 7.588 Kb= 1.70×10-9 We have to calculate the concentration of weak base pyridiene

Q: Rank the following aqueous solutions in ascendingorder of pH and provide reasoning behind your…

A: In the following question we have to arrange the following Acid in ascending order of their pH…

Q: The three pKa’s for phosphoric acid (H3PO4) are 2.1, 6.9, and 12.4. At what pH does [H3PO4]…

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Q: Calculate the molar concentration for acetic acid that ionized at 2.5%, ka=1 ×10-5

A: Let Molar concentration of acid is x percentage dissociation of Acetic acid = 2.5 %  Ka for acid = 1…

Q: The base protonation constant K, of 1-H-imidazole (C,H,N,) is 9.0 × 10. Calculate the pH of a 1.2 M…

A: Given Values: The protonation constant Kb of 1-H-imidazole is 9*10-8 The concentration of the…

Q: monoprotic weak acid (HA) has a pKa value of 4.713. Calculate the fraction of HA in each of its…

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Q: Which of the following would represent the strongest acid? OK₁ = 2.5 x 10-5 O pk = 14.5 O pk = 4.60…

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Q: Citric acid is a triprotic acid. The stepwise acid dissociation constants areK1 = 7.45 x 10–4, K2 =…

A: In this question, we will Identify the species which is major one at pH = 5.0  You can see details…

Q: Which of the following will produce the weakest conjugate acid?     NaOH (Ka > 1)…

A: -&gt;Conjugate acid of strong base is a weak acid .i.e if base is strongest then it's conjugate acid…

Q: A 0.25 M solution of a weak acid (HA) has a pH of 2.50. What is the Ka for this acid

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Q: Arrange the following acids in order of decreasing strength: hydrosulfuric acid (Ka = 1.1 x 10-7)…

A: Given: Ka for different Acids hydrosulfuric acid (Ka = 1.1 x 10-7) boric acid (Ka = 5.8 x 10-10)…

Q: What is the [A-]/[HA] ratio when the weak acid is in a solution one pH unit above its pKa? 1:1 1:10…

A: Buffer solution: The solution that resists the change in pH is known as a buffer solution. The…

Q: 18. If the acetic acid dissociation constant is Ka-1.8 X 10 and its concentration before dissolution…

A: Since you have asked multiple questions we will solve the first one for you. If you want an answer…

Q: Propose the relative ratio and chemical structures of the acid form and conjugate base of the…

A: Henderson Hasselbalch equation: pH=pKa+log[base][acid]

Q: 5. At 25°C, calculate the molar H3O+ and OH-1 concentrations of the following: a. 0.0300 M C6H5COOH

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

Q: Calculate the pH of formic acid (HCOOH) of 10-2 M (Ka) if the acid ionization constant(Ka) is…

A: Given: Initial concentration of HCOOH = 10-2 M Acid ionization constant (Ka) of HCOOH = 6.75 x 10-4…

Q: Given the reaction: HPO4 2- (aq) + HC2H3O2 (aq) ↔ H2PO4 - (aq) + C2H3O2 - (aq)   1. The acid in…

A: According to Bronsted-Lowry Concept, An Acid is proton (H+) donor and when it is loses the proton it…

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

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Q: List the bases from strongest to weakest Ammonia, Kb=1.8x10^-5 Dimethylamine, kb= 5.4x10^-4…

A: Kb…

Q: 1. Write the reaction for H₂S dissolving into water + 2. Write the expression for the Ka Ka = [ b.…

A: Both the questions have been solved in the following step.

Q: The base-dissociation constant of ethylamine (C2H5NH2) is 5.6x10 at 25.0°C. The [Ht] in a 1.2x10-2 M…

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Q: What is the weight NaCH3COO of that must be added to 750.0 mL of 0.180 M acetic acid to form a pH =…

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Q: At 25°C, what is the hydronium ion concentration ina. 0.200 M chloroacetic acid? b. 0.0200 M…

A: When the equilibrium is attained, the determination of species concentration can be done by ICE…

Q: A student prepared a 0.10 M solution of formic acid, HCHO, and allowed it to be dissociated. The…

A: The equation for acid dissociation of formic acid is;             HCHO        ↔         H3O++…

Q: Which of the following are likely to act as Lewis acids and which as Lewis bases? Which might act…

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Q: The base protonation constant K of 1-H-imidazole (C₂H4N₂) is 9.0 × 10 8. -8 Calculate the pH of a…

A: Given: The Kb for 1-H-imidazole(C3H4N2) = 9.0×10-8 We have to calculate the pH of a 1.1 M solution…

Q: Which of the following acids has the weakest conjugate base?     Chlorous acid, Ka = 1.1 x 10-2…

A: The strongest an acid , the weakest is its conjugate base.  The acid which has highest Ka value is…

Q: What would the [OH-] be after addition of 9.75 mL of 0.1000 M HCl to 25.00 mL of 0.1000 B (a weak…

A: To calculate concentration of OH- ions , we would first calculate pOH of the solution using…

Q: Ka

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Q: What is the [H3O*] of a 0.75M solution of the acid HA if its acid dissociation constant is 4.8*10-8?…

A: The dissociation of acids is defined as their tendency to exist in ionic form in aqueous solutions.…

Q: The pH of a 1.4M solution of 3-hydroxypropanoic acid (HC₂H₂O3) is measured to be 2.18. Calculate the…

A: Given-&gt; Concentration of 3-hydroxypropanoic acid = 1.4 M pH = 2.18

Q: 10. Given the pH of 1.5 M chloroacetic acid, CH2CICOOH solution is 1.96. a. Write an equation to…

A: " Since you have posted a question with multiple sub-parts , we will solve first three sub-parts for…

Q: Calculate the ratio [CH3COOH]/[NaCH3COO] that gives a solution with pH = 5.00? Hint: Rearrange the…

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Q: Pyridine is a weak base with K, = 1.7x10-10. %3D C3H5N(aq) + H20) C5H5NH" (aq) + OH Write the K…

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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: 10. Given the pH of 1.5 M chloroacetic acid, CH2CICOOH solution is 1.96. a. Write an equation to…

A: The concept is that the stronger is the acid, weaker is its conjugate base.

Q: From the equilibrium concentrations given, calculate Ka for each of the weak acids and Kb for each…

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Q: A 0.785M solution of the weak acid, hypoiodous acid, HOI, has a Ka of 2.32x10-11.  What is the Ka…

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Q: The pKa of the conjugate acid of guanidine is 13.6, making it one of thestrongest neutral organic…

A: Given: The given conjugate acid is guanidine. pKa=13.6

Q: A monoprotic weak acid (HA) has a pK, value of 4.896. Calculate the fraction of HA in each of its…

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Q: The base protonation constant K, of 1-H-imidazole (C,H,N,) is 9.0 x 10°. -8 Calculate the pH of a…

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Q: Consider the molecule, pentanoic acid which has a pKa of 4.81: H3C OH  Draw the predominate…

A: Given compound: Pentanoic acid pKa = 4.81

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: 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: Given that pKb for nitrite ion (NO-2) is 10.85, find the quotient [HNO2]/[NO-2] in a solution of…

A: Given  pKb for NO2- = 10.85  For HNO2 pKa = pKw - pKb = 14 - 10.85 = 3.15  Ka = 7.1 x 10-4  Chemical…

Q: Vitamin 'C' or ascorbic acid is an essential nutrient for human beings and certain other animal…

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