Arsenic acid (H3AsO4) is a triprotic acid with 3 pKa values (2.24, 6.96, and 11.50). What is the Kb for the following reaction? AsO43– + H2O ⇋ HAsO42– + OH– 1.1 x 10–7 1.7 x 10–12 3.2 x 10–3 5.8 x 10–3 9.1 x 10–8 3.2 x 10–12

Q: The organic acid RCOOH has a pk = 4.08. What is the pH of a 0.50 M aqueous solution of this acid?…

A: Given: pKa of organic acid = 4.08 Concentration of organic acid = 0.50 M

Q: The following solutions were prepared: Solution A: 0.01 mole of perchloric acid (HClO4) dissolved…

A: Given- Moles of HClO4 = 0.01 Volume of water = 1L Moles of ethylamine hydrochloride = 0.01  Volume…

Q: 1. The oxalate ion concentration, C;0. of 0.20 M H;C0 is adjusted to a value of 3.00 x 10 M. What is…

A: As per the guideline, since you have asked multiple questions, we have solved the first question for…

Q: 5) The oxides and hydroxides of gallium exhibit both acidic and basic behaviors B) What is pCa for a…

A: Gallium metal is stable in dry air. It gradually oxidizes in moist air to form a protective film…

Q: Distinguish between physical and chemical properties and changes (§1.1) (SPs 1.1, 1.2) (EPs 1.1,…

A: Matter is anything that occupies space and volume. Matter is made up of atoms. Matter has many…

Q: In an acidic solution with a pH of 3.4, 78% of the acid is ionized. What is the pKa of the acid?

A: pH is defined as negative logarithm of hydrogen ions present in the solution.

Q: Calculate the pKa of water in ammonia generating hydroxide and ammonium products. H2O = 1.07 M ; OH-…

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Q: 15 min. (PhP. (Ph):P=0 r.t.

A:

Q: 18. Calculate the pH of the solution formed when 12.0g of sodium fluoride (0.286mol) (NaF, FW- 41.99…

A: For a buffer- pH = pKa + log[Base][Acid]   Now, pKa = - log Ka = 3.19 [Acid] = 0.5 M [Base] = 0.286…

Q: beaker contains a total concentration of 0.33 molar of weak acetic acid with pKa=4.27 and pH=2.02.…

A: Initial concentration= 0.33 M pKa= 4.27  pH= 2.02

Q: 3. Some projection models put the carbon dioxide concentration at 1255 ppm by the year 2100.…

A: Henry's law: It states that the partial pressure of that gas above the liquid is directly…

Q: Phosphoric (H,PO4) is a triprotic acid with pKa values of 2.12, 7.21, and 12.32. It is solution for…

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Q: What is the pH of a solution that is 0.0032 M in HA and also 0.087 M in NaA? (Ka = 4.1 × 10-6) 6.56…

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Q: A weak acid, HA, has a pKa of 4.838. If a solution of this acid has a pH of 4.675, what percentage…

A: Given:pKa = 4.838pH =4.675

Q: The base ephedrine has a pKa value of 9.6. Calculate the theoretical end point pH when a 0.1 M…

A: Ephedrine, the organic molecule used in the prevention of low blood pressure and asthma. The…

Q: Which of the following acid/ conjugate base pairs would function best as a buffer at physiological…

A: 1- First we should know about physiological pH it's value is 7.40 it's maintain the blood pH because…

Q: 5. A solution of nitrous acid has a pH of 2.45. The [H'] in mol/L and pOH must be respectively a.…

A: Given:…

Q: Calculate the pH of the solution after the addition of each of the given amounts of 0.0554 M HNO3 to…

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

Q: Which of the following is strongest acid HA (pka = 1) HB (pka = 2) HD (pa = 3) НЕ (pка — 4)

A: Pka of acid is given by the negative logarithm of Ka i.e pKa = -log Ka where Ka is the acid…

Q: Hypochlorous acid, HClO, has a pKa of 7.54. What is [ ClO− ] in 0.115 M HClO?    [ ClO− ] =   × 10…

A: Given:Pka = 7.54[HClO] = 0.115 M

Q: Which acid is the best choice to create a buffer with pH=7.38? %3D nitrous acid (HNO2), pKa = 3.34 O…

A: to choose the best buffer, pick out that weak acid whose pKa is close to the pH of the buffer.

Q: Which is more acidic? Is the most dangerous acid the strongest acid? Include a comparison of pH and…

A: Acidic character of a compound can be explained from the values of equilibrium constant. If the…

Q: calculate molar concentration of nitrous acid, concentration of nitrite in which is equal to…

A:

Q: A hypothetical weak acid, HA, was combined with NaOH in the following proportions: 0,20 mol HA, 0,08…

A:

Q: Some projection models put the carbon dioxide concentration at 1255 ppm by the year 2100. Calculate…

A: KH=.034 mol/L .atm

Q: What is the pH of a solution of 0.06 M of H2CO3, pKa1 = 6.4 and pKa2= 10.3?

A: We will calculate pH

Q: Phosphoric acid (H₃PO₄) is a triprotic acid with pKa values of 2.12, 7.21, and 12.32. It is a useful…

A: Buffer solution is one that resists change in pH. H3PO4 is triprotic acid, so, it has three pKa…

Q: 2) Which direction will the equilibrium lie for the following reaction? HO, NaOH ONa + H20 pKa =…

A: Since in the above reaction, there is a carboxylic acid and a base NaOH And they are reacting to…

Q: Calculate the pH of a 0.654 M solution of an acid with Ka = 2.33 x 10-5.

A:

Q: Given the following values of equilibrium constants: Cu(OH)2(s) → Cu2*(aq) + 20H¯(aq) - Ksp 1.63 x…

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Q: What is the pH of a solution that is 0.03M in picric acid and 0.1M in sodium picrate. pka=0.38 O a.…

A: The solution is mixed by adding picric acid to sodium picrate. Sodium picrate is made by adding…

Q: What is the pH of a solution that is 0.048 M in HA and also 0.042 M in NaA? (Ka = 4.1 x 10-6) 6.82…

A: Given, Ka for NaA = 4.1 x 10-6  PH = ?

Q: The pKa of a particular weak acid is 4.85. What is the pH of the weak acid solution when exactly…

A:

Q: Fluoride treatment strengthens tooth enamel by converting hydroxyapatite, Cas(PO4)3OH, into…

A: Solubility product (Ksp) basically exhibits equilibrium that exists between particular solid and its…

Q: What is the pH of a solution that is 0.05M in ethylamine and 0.08M in its chloride salt (pKa=10.8)

A: pH of a solution =?    [ C2H5NH2 ] = 0.05 M    [ C2H5NH3+ ] = 0.08 M Acid dissociation constant :…

Q: the experiment on "Chemical Equilibrium and Le Chatelier's Principle" which of the following will…

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Q: An organic acid has pka = 2.87. What is its Ką value?

A:

Q: Calculate the pH and ionization percentage of 0.2 M ammonium hydroxide solution if PKa = 4.7…

A: PH = 9 and % = 0.005 %  But this option is not given

Q: What is the pH of a buffer solution that contains 0.245 M weak acid and 0.450 M of the conjugate…

A:

Q: what is the pH of a 50 mg mL-1 solution of ascorbic acid (MW 176.1, pKa 4.17)?

A: Ascorbic acid dissociates in water as: C6H8O6+H2O→C6H7O6-+H+ -------(1)

Q: To rule out metabolic acidosis in a patient's blood sample, the total carbon dioxide content should…

A: Henderson-Hasselbach equation. this equation shows the relationship between pH of a solution, the…

Q: Phosphoric acid (H₃PO₄) is a triprotic acid with pKa values of 2.12, 7.21, and 12.32. It is a useful…

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

Q: Aspirin has a pka 5 it will be more than 99% ionized in wha

A:

Q: 38. Determine the pH of 0.42 M for formic acid, HCOOH solution. The value of pka for HCOOH is 3.75.…

A: We have to calculate the pH of Solution.

Q: The pka of a particular weak acid is 4.85. What is the pH of the weak acid solution when exactly…

A:

Q: Hypochlorous acid (HClO) is a weak acid with pKa=9.21. For a 0.10 M aqueous solution of nitrous…

A: Given :  Concentration of HClO = 0.10 M  pKa = 9.21

Q: what is the pKa of the acid?

A: Given :- pH of solution = 4.9  Concentration of conjugate base = x  Concentration of acid = 2.3 x…

Q: The amino acid serine has two pKa values, one for its carbonyl group (pKa = 2.21) and one for its…

A: