Ethanoic acid is a weak acid pka value 4.74 at 298K. Calculate the pH value at 298K of: a 0.1M solution of ethanoic acid. a mixture of equal volumes of 0.1M solution of ethanoic acid and sodium ethanoate.

Q: Calculate the ratio of (conjugate base)/(conjugate acid) for an acetic acid /acetate buffer when the…

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Q: Compare the pH of propionic acid and nitric acid when they are dissolved in water at a concentration…

A: Given: Concentration of both the acids = 20 mM or 20×10-3 M To find: pKa, pH and percent…

Q: At equilibrium, the value of [H+] in a 0.260M  solution of an unknown acid is 0.00418M . Determine…

A: For acid HA, the acid dissociation constant Ka can be written as:

Q: Which acid would you choose to combine with its sodium salt to make a solution buffered at pH 4.25?…

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Q: Calculate the basic dissociation constant for pyridine, C5H5N, if the acid dissociation constant for…

A: Given that, Ka =5.9×10-6  Kb= ?

Q: -The pKa of finalic acid is 6.50, What is the pH of an equimolar solution of finalic acid and sodium…

A: Given: Molarity of finalic acid         = 0.1 M Molarity of sodium finalate = 0.1 M pKa of finalic…

Q: The experimental pH of a 0.25 M solution of potassium hydrogen phosphate, K2HPO4, is 10.25. a. Is…

A: The acidic or basic nature of the compound is decided on the basis of the pH value of the compound.…

Q: A 0.0450 M solution of benzoic acid has a pH of 2.78. Calcula pK, for this acid. What is the percent…

A: 5.) Given that : The molarity of benzoic acid = 0.0450 M pH of the solution = 2.78

Q: The pH of a 0.14M solution of benzoic acid (HC,H,CO,) is measured to be 2.53. Calculate the acid…

A: Answer: 6.5693430657 × 10-5 is the acid dissociation constant (Ka) of benzoic acid.

Q: Calculate the pH at 25 °C of a 0.95M solution of sodium propionate (NaC,H,CO,). Note that propionic…

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Q: In polyprotic acids, when two adjacent dissociation reactions combine, the Ka of the net reaction is…

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Q: Calculate the acid dissociation constant Ka of a 0.2 M solution of weak acid that is 0.1% ionized is

A: Given, A solution of weak acid that is 0.1% ionized.

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: The pKa of acid HX is 6.02, and the pka of acid HY is 3.76. We can conclude that the Kp value of…

A: The larger the PKa value, stronger is the Acid and a weak base. Smaller the PKa value weaker is the…

Q: 15. The pka for o-fluorophenol is 8.81. Draw the predominant form in solution at the given pH…

A: Given information:pKa for o-fluorophenol = 8.81

Q: A diprotic weak base (B) has pK, values of 4.058 (pK) and 7.102 (pKa). Calculate the fraction of the…

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Q: Calculate the percent dissociation of crotonic acid (C, H,CO,H) in a 0.53 mM aqueous solution of the…

A: The term percent ionization can be defined the fraction of the weak acid or base which ionizes in…

Q: What is the pH of a vinegar with 25.65 % (w/v) acetic acid in water? The pKa of acetic acid is…

A: Consider the given information is as follows;  %(w/v) acetic acid = 25.65% pKa of acetic acid =…

Q: -69 The acid dissociation constant K, of hypobromous acid (HBrO) is 2.3x 10. Calculate the pH of a…

A: Consider the dissociation of hypobromous acid is as follows:                       HBrO   →     H+…

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: If acetic acid has a Ka of 1.8 x 10-5, what would be pH corresponding to the half-equivalence point…

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Q: 4 b) At pH 1.58, calculate the free [PO43-] when [PO43-]t = 22 mM. You can either solve 4…

A: Given TOTPO4 = 22 mM or 2.2*10-2 M  => [H3PO4] + [H2PO4-] + [HPO42-] + [PO43-] = 2.2*10-2 M   K…

Q: Although acetic acid is normally regarded as a weak acid, it is about 34% dissociated in a 10-4 M…

A: Acetic acid (CH3COOH) dissociates as CH3COOH(aq) +H2O --> CH3COO (aq)+H30+ (aq) As the amount of…

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: if the pH at one half the first and second equivalence points of a dibasic acid is 4.80 and 7.34,…

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Q: Compute for the pH and % dissociation if 0.10 M of methylamine (CH3NH2) at 25°C (Kb of methylamine…

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Q: d. Calculate the K, of the pyruvate ion. How does the value of the K, make sense in relation to the…

A: The answer to the following question is-

Q: PH a. What type of polyprotic acid is this (how many acidic protons)? Explain why. b. Clearly label…

A: The given plot is:

Q: The acid dissociation constant K, of carbonic acid (H,CO,) is 4.5 × 10~7. Calculate the pH of a 4.0…

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Q: Phenolphthalein indicator is a weak acid with Ka = 10-9 mol/dm-3. It is colourless while its…

A: Weak acid:- Weak acid which does not ionized 100% in aqueous solution

Q: Calculate the pH at 25 °C of a 0.67M solution of potassium acetate (KCH3CO₂). Note that acetic acid…

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Q: Hydroxylamine, HONH2, readily forms salts which are used as antioxidants in soaps. Hydroxylamine has…

A: NH2OH    +H2O   →NH3OH        +        OH-aq              l            aq…

Q: A buffer solution contains formic acid (1M) and an equal molar amount the sodium salt of its…

A: Given;

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: Calculate the fraction of the weak acid in each of its forms at pH 6.22. CHA Incorrect dA- =…

A: Fraction of dissociated and undissociated form of acid can be calculated using Henderson-Hasselbalch…

Q: Calculate the fraction of the triprotic acid in each of its forms at pH 5.13.

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

A: According to the question,  We need to calculate the concentration of H3O+ in a solution that is…

Q: Buffering Capacity Which group is water, which group is phosphate salt, and which group is optimen…

A: The pH of water increases sharply because the concentration of hydroxyl ions increases suddenly on…

Q: The Ka of propionic acid (HPro) has a Ka value of 1.3 x 105. Which of the following statements is…

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Q: Calculate the pH of a 1.00L solution which is made up of 0.058 mol acetic acid and 0.030 mol sodium…

A: Given: Moles of acetic acid i.e. CH3COOH = 0.058 mol. Moles of sodium acetate i.e. CH3COONa = 0.030…

Q: Calculate the pH of each of the following buffered solutions.            Ka of acetic acid = 1.8 x…

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

Q: Ammonia, NH3, is a base and will readily accept a proton in accordance with the following reaction:…

A: Given data                                 NH3(aq)  +  H2O⇔ NH4+(aq) + OH-(aq)∆G° (KJ/mol):…

Q: Phenol red is a common acid-base indicator. It has a pKa equal to 8.000. It's undissociated form is…

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Q: At 25oC, Ka for acid dissociation of aspiring (C9H8O4) is 3.0 x 10-4. Calculate ΔGo for the reaction…

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Q: 100.0 mL at pH= 12.000, [conj.base] = 0.500 M conjugate acid: HPO4 ^2- conjugate base: PO4 ^3-…

A: Buffer is a solution that resists the change in pH when small amount of acid or base is added to it.…

Q: Quinine (C20 H24 N2O2) is the most important alkaloid derived from cinchona bark. It is used as an…

A: Given :  pKb1 = 5.1  pKb2 = 9.7  Mass of quinine  = 1 gm  Volume of solution = 1930 ml

Q: A solution of sodium acetate is prepared using 0.56 mol L-1 NaOH as the solvent. The pKapKa of…

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Q: Jisoo was tasked to ensure that an enzyme responsible for keeping her species from extinctior…

A: Given the required pH of the buffer solution = 10.00 [H+] = 10-pH = 10-10.00 = 1.00*10-10