Q: 1. When comparing two compounds, the compound with smaller pka value means that it is
A: pKa = -log Ka log Ka = -pKa Ka = 10-pKa
Q: Some weak acids and their pKa values are given below. Which one of these acids will have the…
A: pKa values are used to identify the acidic strength of the molecule. Lower the pKa value, higher is…
Q: a If an acid, HA, dissolves in water such that the Ka is 10000, what is the pK, of that acid? pK, =…
A: Given that: The acid HA dissolves in water such as: HA (aq) + H2O (l) → H3O+ (aq) + A- (aq) For,…
Q: Which acid do you think would have the lower pKa value: HBrO4, HBrO3, HBrO2, or HBrO? Explain your…
A: Here we are asked which acid would have the lower pKa value.the acids are as follows,HBrO4, HBrO3,…
Q: What is the pKa of an acid? As the pKa value increases, does the acid strength increase or…
A: The pKa value is method used for indicate the strength of an acid. pKa is the negative log of the…
Q: Acids and Bases Indicate the approximate pKa values of the protons labelled a-e in the molecule…
A:
Q: Example. Rank the following compounds in order of acidity of the alpha hydrogens. (1 most acidic)…
A: Acidity : Acidity of organic compound depends the Stability of anion after removing Hydrogen…
Q: Shown below it the equilibrium between guanidine and the guanidinium ion. NH₂ pKa = 13.60 H₂N-C-NH₂…
A:
Q: Calculate the pH of a 0.35 M solution of hydrocyanic acid (HCN), which has a pKa of 9.31. Your…
A: Given, Concentration of HCN, [HCN]= 0.35 M pKa of HCN is 9.31 So, Ka = 10-pKa = 10-9.31 =4.90×10-10…
Q: Ka for boric acid is 7.3 x 10¯10. What is the pKa of boric acid? A 4.86 B 9.14 C 8.66…
A: Using relation between ka and pKa , we wi calculate pKa .
Q: Two pKa values are reported for malonic acid, a compound with twoCOOH groups. Explain why one pKa is…
A: The strength of an acid is determined by pKa values. Lesser acidic acid has more pKa and more acidic…
Q: Rank the following molecules in order of increasing pKa (lowest pka to highest pKa). OH OH OH -F (1)…
A:
Q: 1. Acid A has a pKa value of 5.71, and acid B has a pKa value of 5.30. Which of the two acids is the…
A: Ka is called the acid ionization constant. Strong acid has high value of Ka and weaker acid has…
Q: HA > H* + A d) A solution of an unknown acid has a Pka of 4.4. Calculate the concentration of the…
A:
Q: Assign the pKa's 2.49 , 3.58 , and 4.78 to the compounds shown below. COOH COOH А: B: COOH C: Which…
A: Acidity is defined as the ability of a molecule to donate protons. If it can donate protons easily ,…
Q: What is the pKa of a weak acid with a Ka of 4.7 X 10-6?
A:
Q: 2. What are the pKa's of HCN (hydrocyanic acid), and HF (hydrofluoric acid)? Based only on those pka…
A: We have to write the pka's of HCN (hydrocyanic acid), and HF (hydrofluoric acid). Based only on…
Q: Ka for acetic acid is 1.8 * 10-5. What is the first digit of the pKa value for acetic acid?
A: pKa value indicates the strength of an acid. The more the value of pKa, the more acidic will be the…
Q: Valproic acid is a drug treating epilepsy with a pKa around 4.5. Considering in the stomach…
A: Given:- Valproic acid is a drug treating epilepsy with a pKa around 4.5. Considering in the stomach…
Q: Calculate pKa
A: Given :- Ka for acetic acid = 1.8 × 10-5 To calculate :- pKa value
Q: 6. The pka of formic acid is 3.750. What is the Ka of formic acid?
A: The answer to Question No. 6 is given as -
Q: The isoelectric point of a zwitterion with an acidic pKa of 3 and a basic pKa of Select one: O a. 9…
A: Given pKa acidic =3 pKa basic = 6
Q: What is the pH of a solution containing 0.876 mol L-1 of HCl and 1.069 mol L-1 of a weak acid with…
A: Strong acid dissociate completely so, the H+ concentration is more in the solution. And weak acid…
Q: The ammonium ion (NH4* , pKa = 9.25) has a lower pKa than the methylammonium ion (CH3NH3", pKa =…
A: The stronger base is methylamine. Reason :- pKa is inversely proportional to acidity . It means…
Q: 4. Here are the pKa values for Question 2. Did you get the answer correct in which direction the…
A: Given : pKa of H2O = 15.7 pKa of NH4+ = 9.8 pKa of NH3 = 33 Since pKa = -log Ka so higher is the…
Q: Calculate the pH of a 0.12 M solution of hydrocyanic acid (HCN), which has a pKa of 9.31.
A:
Q: given weak acid has a pka of 7.83. Calculate the percent ionized in .34M of the weak acid
A: Given acid is weak so we will use concept of weak acid. Percent ionisation=√ka×C
Q: a) Calculate Ka of formic acid whose pKa= 3.75. b) Calculate pKa of nitromethane whose Ka = 5.0 x…
A: A) pka = 3.75 B) Ka = 5.0 × 10-11
Q: Match the pKa values to the appropriate compound. pKa values: 0.28, 1.24, 2.66, 2.86, and 3.12.…
A:
Q: What is the [A-]/[HA] concentration ratio required to obtain a pH 5.3, given that the pka of HA is…
A: The pH of a buffer (HA/A-) is determined using Henderson-Hasselbalch equation- pH = pKa +…
Q: Given the following pka values for acids acid pKa NH3 38 50 CH4 H,0 CH3CO,H 4.74 HC CH 15.7 25 Which…
A:
Q: The pKa values of the two ammonium cations drawn below are 8.33 and 11.1. Which pKa corresponds to…
A: pKa : it is the negative logarithm of Ka .It is generally used to express the acidity of a molecule.…
Q: Which is a stronger acid: one with a pKa of 5.2 or one with a pKa of 5.8?
A: The value of dissociation constant of acids tells us about the acidic strength of acids. The acid…
Q: 3. Which is the stronger acid: (b) Boric acid with a pKa of 9.14 or carbonic acid with a pka of…
A: pKa value can be used for deciding acid is strong or weak. pKa=-log10(Ka)where Ka is acid…
Q: The pKa values of a compound with two ionizable groups are pK1 = 4.10 and pK2 between 7 and 10. A…
A: The pK2 is to be calculated.
Q: 3. Phosphoric acid is tribasic, with pKa's of 2.14, 6.86, and 12.4. The ionic form that predominates…
A: using the given pka to determine the ionic form that has maximum concentration.
Q: Calculate the Ka for the weak acid knowing the pKa value is 13.07
A: Acid dissociation constant, Ka represents how strong the acid is in a solution.
Q: A pka - 4.15 pКa ~ 2.16 O. NH, C pka - 9.58 The structure as drawn shows the molecule having all of…
A: We have to calculate the net charge at the physiological pH .
Q: H H-C-COOH pKa 2.34 NH3 pka = 9.60 A) 7.50 В) 3.63 C) 5.97 D) 7.26 E) 11.94
A: NOTE: There is a typo error in the question. It will be Pi of glycine and not pain. Pi means the…
Q: Q16. Identify the two acid/conjugate base and base/conjugate acid pairs in the following acid/base…
A: A base is the one that abstracts the acidic proton from the substrate because it consists of a lone…
Q: If the pKa for formic acid is 3.75 the ratio of formate (A) to formic acid (HA) at pH 4.15 is 5:1.…
A: Since you have posted a question with multiple subparts , we will solve the first three subparts for…
Q: Using the pk values, calculate the pI for each of the following:
A:
Q: The pka of formic acid is 3.750. What is the Ka of formic acid?
A: The pKa value is the value used to indicate the strength of an acid. It is the negative logarithm of…
Q: 6. Given a Ka = 1.5 x 10-8, calculate the a. pKa: b. Kb: c. pKb: d. Briefly explain why you think…
A: Ka = 1.5 x 10-8 pKa = -log Ka pKa = - log 1.5 x 10-8 pKa = 7.82
Q: Calculate the pKa of an acid with Ka = 7.77 x 10-4. %3D O A. 2.230 О в. 3.110 O C. 4.147 D. 7.160 O…
A:
Q: Refer to the reaction below. The STRONGEST ACID is: pKa = 18 (CH3)3C-Ö-H A. + KOH B. — (CH3)3C-6 4…
A:
Q: 4. Acid A has a pKa value of 5.71, and acid B has a pKa value of 5.30. Which of the two acids is the…
A: A strong acid is completely dissociated in an aqueous solution. On the other hand, a weak acid is…
Q: The pKa values of the two ammonium cations drawn below are 8.33 and11.1. Which pKa corresponds to…
A: pKa : it is the negative logarithm of Ka .It is generally used to express the acidity of a molecule.…
Q: Acid A has a pKa value of 5.71, and acid B has a pKa value of 5.30. Which of the two acids is the…
A: Weak acid: Weak acid does not dissociate completely when dissolved in water. Strong acid: Strong…
What is the Ka of an acid that has a pKa value equal to 3.93?
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- Periodic acid, HIO4, is an important oxidizing agent and a moderately strong acid. In a 0.10 M solution, [H+] = 3.8 × 10–2 mol L–1. Calculate the Ka and pKa for periodic acid.Calculate the pH values of the following solutions: a. a 1.0 M solution of acetic acid (pKa = 4.76) b. a 0.1 M solution of protonated methylamine (pKa = 10.7) c. a solution containing 0.3 M HCOOH and 0.1 M HCOO - (pKa of HCOOH = 3.76)The pKa of a particular weak acid is 4.85. What is the pH of the weak acid solution when exactly half of the acid is neutralized?
- The pH of a 0.02M solution of a weak acid was measure at 4.6 a. What is the [H+] in this solution?b. Calculate the acid dissociation constant Ka and pKa for this acid?Butyric acid, the compound responsible for the unpleasant odor and taste of sour milk, has a pKa value of 4.82. What is its Ka value? Is it a stronger acid or a weaker acid than vitamin C?What is the pH of a 0.10 M solution of an acid with a pKA of 8.4?
- Ethanoic acid is a weak acid pka value 4.74 at 298K. What do you understand by the term pka and ka? Calculate the numerical value of ka for ethanoic acidThe Ka for iodic acid is 0.18. WHat is Kb for the iodate ion?At what pH is the concentration of a compound, with a pKa = 8.4, 100 times greater in its basic form than in its acidic form?