For each of the following acid-base pairs, give the value of the equilibrium constant for reaction. Be careful about pKa vs. pKb. a) Formic acid (weak acid, pKa=3.75) and ammonia (NH3, a weak base with pKb = 4.75) b) Formate ion reacting with ammonia c) Formic acid reacting with ammonium ion.

Q: Please calculate the pKa of hydrofluoric acid given that HF(aq) and hydrogen cyanide (HCN). HF(aq):…

A: Molarity of HF = 5nM Molarity of HCN = 5nM

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Q: Given the following information: acetic acid CH3COOH hydrocyanic acid = HCN CH3COOH is a stronger…

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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: Phenolphthalein has a pKa of 9.7. It is colorless in its acid form and pink in its basic form. For…

A: Given, pKa = 9.7 To calculate the [In-]>[HIn] and predict the color of a phenolphthalein…

Q: Assuming that base (B:) and acid (AH) are mixed in equal concentrations and using pKa values of acid…

A: Let the initial concentrations of base and AH be 1 M each. The pKa of AH is 3.5 and the pKa of BH+…

Q: What is the pH of a solution that results from mixing together equal volumes of a 0.130 M  solution…

A: Given, 0.130 M solution of acetic acid 0.065 M solution of sodium hydroxide pKa of acetic acid =…

Q: Calculate the pka for the acid-base equilibrium below: OH Ka = le-9 00 H20 H3O*

A:

Q: 8. In this case, the pH of the Flint River is well-characterized at 7.92. Based on your chemical…

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Q: The concentration of carbonic acid, H2CO3, in a typical carbonated drink is approximately 7.0 x 10-2…

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Q: What is the pH of a 0.45M solution of NaC2H3O2?  a. Find the concentration of C2H3O2 in the…

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Q: Which has the larger numerical value? Q.) The pKa of a strong acid or the pKa of a weak acid

A:

Q: Assume that you have two unlabeled bottles, one of which contains phenol (pKa = 9.9) and one of…

A: Acid is a substance which is capable of donating a proton or capable of accepting lone pair of…

Q: The ionization of benzoic acid is represented by this equation.    If a 0.045M solution of benzoic…

A: Given , Ionization of benzoic acid  C6H5COOH(aq)⇌H+(aq) + C6H5COO-(aq)  [H3O+]=1.7×10-3 Molarity of…

Q: At 25°C, what is the hydronium ion concentration in the following with discussing your result:- )…

A: The hydronium ion concentration can be found from the pH by the reverse of the mathematical…

Q: Calculate the pKa of hydrofluoric acid (HF(aq)) and hydrogen cyanide (HCN). What would be the pH of…

A: Given: concentration of HF = 5 mM = 0.005 M         concentration of HCN = 5 mM = 0.005 M Gibbs free…

Q: 7. Rank the following acid-base conjugate pairs by order of increasing strength of the acid? Their…

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Q: Benzoic acid, HC7H502, and its salts are used as food preservatives. Ka for benzoic acid is…

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Q: Define pKa for a weak acid. What is the relationship between the value of the pKa and the strength…

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Q: One way to determine the predominant species at equilibrium for an acid-base reaction is to say that…

A: The pKa value of species in an equilibrium is a useful factor to determine the predominant species…

Q: 2. Oleic acid (which can be denoted as HOL), is a weak acid. Considering its sodium salt, sodium…

A: Answer: 5.02

Q: A 0.190 M solution of a weak acid (HA) has a pH of 2.91. Calculate the acid-dissociation constant…

A: Weak acid and its dissociation:

Q: -) Production of a diprotic acid H2XO4 involves 3 steps as shown below: 1. X(s) + O2(g)= XO2 (g) AH=…

A: Please have a look on the solution:

Q: You create a solution that is 0.20 M formic acid and 0.25 M sodium formate and the equilibrium shown…

A: For the given reaction, HCOOH + H2O ⇌ HCOO– + H3O+  [Formic acid] = 0.20 M [Sodium formate] = 0.25 M…

Q: For the next questions, consider 1 liter of a solution containing 0.02 M hypothetical acid, HA, and…

A: Given,  Molarity of HA = 0.02 M  Volume f solution in L = 1.0 L  Molarity of salt of conjugate base…

Q: A weak monoprotic acid, HA dissociates by 2.416 % and has a pH of 3.61. Calculate the Ka value for…

A: percent dissociation of HA is 2.416% pH = 3.61

Q: Oleic acid (which can be denoted as HOL), is a weak acid. Considering its sodium salt, sodium oleate…

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Q: The pKa of a weak acid (increases, decreases, is unaffected) if the equivalence point is increased…

A: Answer:- This question is answered by using the simple concept of titration of acid and base. The…

Q: What is the pH of a solution that results from mixing together equal volumes of a 0.120 M  solution…

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Q: A weak acid solution with concentration 0.020 M has a pH of 3.7, what is the pKa of this acid?

A: Given pH = 3.7 Initial Concentration = 0.020 M

Q: 1. a) why is calculating the pH of L- a weak base calculation? b) Why is it necessary to consider…

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Q: Write the net ionic equation and eliminate spectator ions: a) Identify the following and acids or…

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Q: 3. Calculate the pK, of hypobromous acid from its Ka value. (Refer to Appendix H)

A:

Q: 1.) Which of the following is the correct equilibrium constant for the following KC1O4 (s) + HCI…

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Q: An initial 0.010 M solution of a weak acid (HA) is measured to have 0.0015 M of its conjugate weak…

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Q: What is the concentration of H3O+ in a solution that is 0.0600 M Hypochlorous acid (HClO)? What is…

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Q: Selenic acid, H2SeO4, is a diprotic acid that actually is a strong acid for the donation of its…

A: The dissociation of weak acid is very low as compared to strong acid and base. The weak acid and…

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A: The equilibrium constant of the chemical reaction gives insight into the interaction between the…

Q: Differentiate the following: pH from pOH Ka from Kb pKa from pKb

A: The differences between pH and POH,ka and kb & pka and pkb are following-:

Q: How do I use the numbers given to find the masses in grams?

A: Preparation of a buffer solutionBuffer is a solution that can resist any change in its pH by 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: Calculate the pH of a 0.10 M solution of potassium acetate. The pKa for acetic acid = 4.76 (at…

A: Given, 0.10 M solution of potassium acetate. The pKa for acetic acid = 4.76 (at 25°C)

Q: Imagine that 500 mL of a 0.100 M solution of HOAc(aq) is prepared.  What will be the [OAc–] at…

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Q: The pka of HCN is 9.21. Would this substance be best used for preparing an acidic, basic or neutral…

A: Given: pKa of HCN = 9.21

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: Three acids found in foods are lactic acid, LA, (in milk products), oxalic acid, OA, (in rhubarb),…

A: Answer:- This question is answered by using the simple concept of weak acid strength which is…

Q: Calculate K, and pK, for water. H₂O acid (HA) + H₂O solvent H₂O+ + OH conjugate base (A)

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Q: Write the chemical equation and the Ka expression for the acid dissociation of each of the following…

A: The expression for equilibrium constant may be written as the ratio of the multiplication of the…