Arsenic acid, H3AsO4, has 3 pKa values (pKa1 = 2.31, pKa2 = 7.05, pKa3 = 11.9). What is the K-value for the following reaction? HAsO42–   +   H2O   ⇋   H2AsO4–   +   OH– 7.9 x 10–3 2.0 x 10–12 1.3 x 10–12 1.1 x 10–7 8.9 x 10–8

Q: Which of the following is an acidic salt?* OKNO3 O SrCl2 O CuCl2 Ba(CH3C00)2

A: Acidic salts are the ones which produce acidic solution when dissolved in solvent. Acidic salts are…

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: What is [H] in a 0.430 M solution of acrylic acid, CH2CHCOOH (Ka = 3.16 × 10 5)? %3D

A:

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: A sample of potassium acetate, KCH3CO2 (M=98), of mass 4.9 g is used to prepare 500 ml of solution.…

A: Consider the given information is as follows; Mass of KCH3CO2 = 4.9 g Volume of solution = 500 mL =…

Q: Calculate the pH of a solution of 6.5 x 109 mol of Ca(OH)2 in 10.0 L of water. Ksp(Ca(OH)₂) = 6.5 x…

A:

Q: Consider the following expression for the equilibrium constant that represents the dissociation of…

A: Given-> Weight of iodic acid = 176 gm Volume= 1.00 L Molar mass of iodic acid = 175.91 g/mole

Q: Calculate the pH of a solution of 6.5 x 10 mol of Ca(OH)2 in 10.0 L of water. Ksp(Ca(OH)₂) = 6.5 x…

A:

Q: Arsenate (AsO43) is highly toxic as it is incorporated instead of phosphate in many biomolecules.…

A: THE REMOVAL OF 1ST H+ IS SHOWN IN THE FOLLOWING REACTION, H3AsO4aq⇌H2AsO4-aq+H+aq THE ICE TABLE IS…

Q: Chemistry Like aqueous solutions of Fe3+, bismuth ions (Bi3+) form acidic solutions with a pKa =…

A:

Q: Consider the acid HXOy where X is a halogen that is less electronegative than oxygen. Which of the…

A:

Q: Write the dissociation equation and calculate the pH for a solution of 2.5 M HNO2 nitrous acid, Ka…

A:

Q: A lab is performed by students who used diagnostic tests to try to distinguish among four pure…

A: When ionic compounds (acid, base, or salt) dissolve in water it dissociates into ions. Due to the…

Q: What is the pH of a 0.1 M solution of acetic acid (pKa 5 4.75)? Use the quadratic equation to slove…

A: Acetic acid is a weak acid. In aqueous solution it do not dissociate completely. The concentration…

Q: Fill in the left side of this equilibrium constant equation for the reaction of benzoic acid…

A: The Equilibrium constant for a reaction   A + B ⇔ C + D   Can be written as  K = [C][D][A][B],…

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: What is the pH of a 0.173 M aqueous solution of sodium acetate, NaCH3COO? (Ka for CH3COOH =…

A:

Q: 5.796

A: Kb = 10-pKb  Kb = 10-5.796 Kb = 1.6 • 10^-6

Q: Write the chemical equation for the formation of the Ni(NH3)6+ ion.

A: When solid Nickel hydroxide,Ni(OH)2 is dissolved in aqueous solution of NH3, hexaaminenickel(II) ion…

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

A: KH=.034 mol/L .atm

Q: Calculate the pH of a 0.20 M solution of sodium acetate (NaCH3COO) given that the Ka of acetic acid…

A:

Q: A strong base, such as sodium hydroxide (NAOH), is added in a solution of 0.1 mol/L acetic acid…

A: Given:     Here we have to use the concept of buffer solution and apply the Handersons equation for…

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: A 0.030 M aqueous solution of a sodium salt (NaA) has a pH of 8.23. What is the value of K, for the…

A: The correct answer is given below

Q: At what pH is the concentration of a compound, with a pKa = 8.4, 100 times greater in its basic form…

A:

Q: Which of the following statements is true about an aqueous solution of NH,CN? K, (HCN) - 4.9 x 10…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: Oxalic acid is a diprotic acid with ionization constants Ka = 5.62 x 10- and K = 5.42 x 10-5.…

A: Potassium hydrogen oxalate is potassium salt of oxalic acid. It have second H+ ion to donate. So to…

Q: Calculate the pH of a 0.0101 M aqueous solution of formic acid (HCOOH, Ka = 1.8E-4). pH =

A: For weak monoprotic acid ( HCOOH) : pH = 0.5 x (- log Ka - log C ) pH = 0.5 x ( - log 1.8 x 10-4 -…

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

A:

Q: Which of the following salts would produce the most acidic 0.10 M aqueous solution? FeCl, KF, KNO,…

A: FeCl is the right answer. Whichever is the stronger acid will be the dominate factor in determining…

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: Phenoxide ion (C,HsO) is a weak base, with Kp = 7.70 x 10. Calculate the pH of a 0.50 M aqueous…

A: Given that  Kb = 7.70 × 10-5  Peroxide ion is a weak base

Q: Calculate the pH of a solution of 6.5 x 10⁹ mol of Ca(OH)2 in 10.0 L of water. Ksp(Ca(OH)₂) = 6.5 x…

A:

Q: What is the concentration of calcium ions in a 2M solution of calcium phosphate? 3M O 2M O 4M 6M

A: Molarity is defined as “the mole of the solute per unit volume of the solution”. It is represented…

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

A:

Q: What is the pH of a 0.15M solution of potassium nitrate? (The Ka value for nitrous acid is 4.0 x…

A: Considering the given solution to be 0.15 M potassium nitrite, we have solved further.

Q: At what pH is the concentration of a compound, with a pKa = 3.7, 10 times greater in its acidic form…

A: Given information: pKa = 3.7 [Acid] = 10[Base]

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: Which one of the following substances is/are amphoteric? (2) HS-1 (3) PO43- 1-*OSH (1) 2 only 3 only…

A: 1. HSO4-1 : - This compound is  amphoteric meaning that in water it can behave as both a proton…

Q: A weak acid, HA, has a pKa of 4.268. If a solution of this acid has a pH of 4.853, what percentage…

A:

Q: What is the pH of a 0.04 Mof the diprotic acid H2CO3 solution? Kai= 4.3 x 10-; Ka2 = 4.8 x 1011 %3D…

A:

Q: Fill in the left side of this equilibrium constant equation for the reaction of diethylmethylamine…

A:

Q: Write the balanced NET IONIC equation for the reaction that occurs when nitri acid and sodium…

A: The explanation is given below-

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

A:

Q: Calculate the degree of ionization of morphine, pKa 8.0, in a solution with a pH of 2.2. Predict how…

A: The question is placed on the concept of equilibrium. we have to identify degree of dissociation of…

Q: Determine the pH of each of the following solutions. (a) 0.829 M hydrazoic acid (weak acid with Ka =…

A: