2. Oxalic acid (a diprotic acid HOOCCOOH; pKal 1.25 and pKa2 = 4.28 at 25°C) is added to pure water at a concentration of 10-2 M. Determine the final pH to the nearest 0.001 pH unit at equilibrium and the concentration of all species using: an exact solution. Assume 25°C and ionic strength effects are negligible. (5 marks) b. an algebraic approximation. Check your assumptions and compare the solution in part (a) (5 marks) a. =

Q: What is the pH of a 0.35 M solution of a Base with a Kb = 4.4 x 10-4 at 25°C? Identify the step(s)…

A: Concentration of base = 0.35 M Kb= 4.4 × 10-4  pH = ?

Q: The following reaction was performed in a sealed vessel at 747 ∘C : H2(g)+I2(g)⇌2HI(g) Initially,…

A: Given reaction: H2(g)+I2(g)⇌2HI(g) Initial concentration :  [H2]=3.65M and [I2]=2.65M Concentration…

Q: Lab #4: Data Sets and Calculation Pages Standardization Titration of the Sulfuric Acid (H2SO4 (aq):…

A: Since you are asked for many sub-parts, we are entitled to solve first only.

Q: In the laboratory, a general chemistry student measured the pH of a 0.589 M aqueous solution of…

A:

Q: Ca luck are the solubility of each of the following salts in moles per lister given the lap values.…

A:

Q: True or false (6).  The greater the Ksp value,   the more soluble the precipitate in water

A: Since you have posted multiple questions so I am solving question number 6 .If you want to be solved…

Q: The pH of a basic solution is 8.15. What is [H]?

A: Given  pH is 8.15 To determine concentration of H+

Q: What is the pH of a solution containing 0.81 mol L-1 of HBr and 0.719 mol L-1 of a weak acid with…

A: A solution containing 0.81 mol/L HBr and 0.719 mol/L of weak acidpKa = 7.02This is a mixture of a…

Q: True or false (7).  The greater the Ka value,   the more dissociation the weak acid.___________…

A:

Q: A solution is prepared at 25 °C that is initially 0.083M in chlorous acid (HCIO,), a weak acid with…

A: Initial concentration of chlorous acid= 0.083 M Ka=1.1×10^-2 Concentration of sodium chlorite =0.065…

Q: Using the known value for the Ka for acetic acid (1.76x10^-5),calculate the expected ph of an acetic…

A: Acetic acid, CH3COOH, is an organic acid. It is a weak acid with Ka of 1.76 x 10-5. It is a…

Q: Solve for solution 4, pH= 4.15

A: In the given question we have to calculate the final pH of the solution after dilution.

Q: Determine the molar solubility for Al(OH)3 in pure water. Ksp for Al(OH)3 = 1.3 x 10-33.

A: Given question of ksp Al(OH)3 = 1.3 × 10-33 We have calculated the molar solubility of Al(OH)3

Q: 12. Sodium Azide (NaN3) is sometimes added to water to kill bacteria. Calculate the pH of a 0.010…

A: Step 1: The chemical equation for the ionization of the azide ion in water isBased on the given…

Q: What is [H3O+] and the pH of a solution of H2CO3 with [H2CO3]Total = 4.5 x 10-4 M? (Use the pKa…

A: 4.) To calculate [H3O+] , we would write dissociation equation of H2CO3 and use pKa of first…

Q: 5. An unknown weak acid with a concentration of 0.095 M has a pH of 1.82. What is the K, of the weak

A:

Q: pH = 7.15 Use the following table to predict the best acid/ base pair for the desired pH/pOH values…

A: Given :  pH = 7.15 For acidic buffer : pH = pKa + log ([conjugate base]/[acid]) For basic buffer :…

Q: . A commercial window-cleaning liquid has a pH of 11.7. What is the hydroxide ion concentra the…

A: pH + pOH = 14 pOH = - log[OH-] pH > 7 , solution is basic pH < 7 , solution is acidicpH = 7 ,…

Q: 2. A solution has a [H,O*]= 1.00x10“ M. W a. Calculate the pH. U (aq) b. Is the solution acidic or…

A: Given-> [H3O+] = 1.00 × 10-6 M

Q: A buffer solution made from NaHCO3 and NazCO3 has a pH in the range of 9-11. Write balanced…

A:

Q: app.aktiv.com ! 1 Q F 2 W NEXT > 2 The pH for 6.1 x 10 M solution of cocaine, a weak base, is 9.60.…

A: We know that, pOH = 14 - pH = 14 - 9.60 = 4.40and concentration of OH-[OH- ] = 10-pOH          =…

Q: 5) A 250.0 mL sample of 0.350 M acetic acid (Ka = 1.78 x 10-5) reacted with 2.250 L of gaseous NH3…

A: a) pH = pKa + log([A-]/[HA])   where [A-] is the concentration of the conjugate base, [HA] is the…

Q: What is the pH of a solution prepared by adding 0.025 mol of NaOH to 400. mL of 0.10 M C6H5COOH? Ka…

A: 0.025 mol of NaOH is added to 400 mL of 0.10 M C6H5COOH. The reaction taking place is, C6H5COOH +…

Q: The K, for hydrofluoric acid HF is 6.8 x 104. (4 points) Calculate K, for its conjugate base F…

A:

Q: Formic acid is classified as a weak acid with a Ka of 1.7 x 10-4 given by the following equilibrium:…

A: There are several theories to  define the compound as acid.One such theory is the Arrhenius…

Q: The acid dissociation constant K, of acetic acid (HCH,Co,) is 1.8 x 10. D. Calculate the pH of a…

A:

Q: S No. Indicator pK, Ka 1. Phenolphthalein 2. Methyl orange 3. Thymol Blue 4. Bromothym ol blue 5.…

A:

Q: b. NaNO₂ (Ka of HNO₂ = 4.5 x 10-4) c. NH4NO3 (Kb of NH3 = 1.76 x 10-5)

A: Here we have to calculate the pH of the 0.100 M of the given salts. NaNO2 is a salt of weak acid(…

Q: b. 0.100 M methylamine (CH3NH2) (Kb = 4.35 x 10-4)

A: The methylamine is a weak base. the given concentration is 0.1 M. The dissociation constant…

Q: For a certain acid pK, = 7.12. Calculate the pH at which an aqueous solution of this acid would be…

A: Answer: In this question we have to find out pH of a solution of weak acid when pKa of weak acid and…

Q: A 1.161g sample of pure maleic acid (H2M, 116.1 g/mol) with Ka1 and Ka2 values of 1.42 × 10-2 and…

A: In the given, we have to calculate alpha 1, alpha 3, and the concentration of HM- in the…

Q: 2) The indicator Haln has Ka = 4.5 x 105, Kaz = 4.5 x 10°. H,ln is red, HIn' is blue, In2 is yellow.…

A: Given data:-

Q: Reie CanstarPeriodis Goat rstand the relation between the strength of an acid or a base and its pk,…

A: The solution is as follows:

Q: The ionization constant for water (K) is 1.94x 10 14 at 34°C. Calculate [H,0*] (in M), [OH ] (in M),…

A: Ionization constant (kw) = 1.94 × 10-14 [H3O+] = ? [OH-] = ? pH = ? pOH = ?

Q: A solution is made by dissolving 33.5 g of Ba(NO₂)2 in 500.0 mL of water. Using Kb(NO₂) = 2.2 ×…

A:

Q: rite the expression for the Ka when HC₂H3O2 is dissolved in water 2H3O2 + H₂O C₂H3021 + H30+1 ][ Ka…

A:

Q: Calculate the pH of the following solutions.  - 0.020 M HCl

A: Hydrogen ion concentration is an important parameter of an aqueous solution. The concentration of…

Q: pH = 10.31 Use the following table to predict the best acid/ base pair for the desired pH/pOH…

A: Given : To predict the best acid/ base pair for the desired pH value of 10.31.