The ionization constant Ka for formic acid is 1.77x10⁻⁴. What are the the pKa for formic acid and the pH of a 1 M solution of this weak acid? A) pKa = 3.34 and pH 4.3 B) pKa = 3.8 and pH = 1.9 C) pKa = 3.34 and pH = 2.17 D) pKa = 2.9 and pH = 1.4 E) pKa =7.8 and pH =12.2

The ionization constant Ka for formic acid is 1.77x10⁻⁴. What are the the pKa for formic acid and the pH of a 1 M solution of this weak acid? A) pKa = 3.34 and pH 4.3 B) pKa = 3.8 and pH = 1.9 C) pKa = 3.34 and pH = 2.17 D) pKa = 2.9 and pH = 1.4 E) pKa =7.8 and pH =12.2

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

Publisher:Crouch

Chapter8: Polyfunctional Acids And Bases

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: 1. Here we have two molecules. First one is the salicylic acid and the second one is the acetyl…

A: pKa value basically indicate the strength of acid . pKa value is the negative logarithm of acid…

Q: Concentration Buffer solution pka Desired ph 1 0.010 M Phosphate 7.21 8.0 2 0.50 M…

A: Buffer capacity can be calculated as follows, As desired pH is greater than pKa value, than…

Q: The pH of an aqueous solution of weak monoprotic acid is 3.15. What is the initial…

A: All the details are explained in handwritten solution.

Q: Determine the Ka expression for the reaction below. NH4+ (aq) + H2O (l) ⇄ NH3 (aq) + H3O+…

Q: omework ubmitted Aug 8 at 11:15pm 1/1 pts Question 13 The [OH ] and the pH of 0.035 M KOH at 25 °C…

Q: that is 0.192 M in lactic acid and 0.155 M in sodium lactate? The Kaof lactic acid is 1.4 × 10-4.…

A: Buffer is the solution of mixture of weak acid/weak base with its salt of strong base/strong acid

Q: Consider two acids: C,H5CO,H (benzoic acid, pK = 4.2) and HCO,H (formic acid, pK=3.8). Which acid is…

A: We are having two acids benzoic acid and formic acid we have to choose the strongest acid .

Q: In my slide, there is a table summarizing the pKa values for different acids. (1) when ranking the…

A: (1) The pKa quantifies how strongly a positive charge is retained by something like a Bronsted…

Q: In an acidic solution with a pH of 3.4, 78% of the acid is ionized. What is the pKa of the acid?

A: pH is defined as negative logarithm of hydrogen ions present in the solution.

Q: The pKa values of 4 acids are given below. Acid HA1 HA2 HA3…

A: More is the value of pKa weaker is the acid and higher is its pH and vice versa. Weaker is the base…

Q: Given the Ka values, estimate the pKa value of each of the following acids without using a…

Q: What is the pH of a 0.298 M C6H5CO2H M solution if the Ka of C6H5CO2H is 6.5 x 10-5? Your Answer:…

A: Given Concentration of C6H5COOH = 0.298 Ka for C6H5COOH = 6.5×10-5

Q: Hypochlorous acid,HCIO, has a pKa of 7.54. What are [H3O+], pH, [CIO-], [HCIO], and pOH in 0.115M…

Q: What is the pH of a solution containing 0.642 mol L-1 of a weak acid with pKA = 3.01 and 0.865 mol…

Q: What is the pH of a solution containing 0.57 mol L-1 of a diprotic acid with pKA1 = 5.36 and pKA2 =…

A: The solution is given below:

Q: Tyrosine is a triprotic weak acid, with pKa1=2.41, pKa2=8.67, and pKa3=11.01. a) calculate the…

Q: What is the pKa of a weak acid with a Ka of 4.7 X 10-6?

Q: Saliva, pH = 6.5 Saliva, = 6.5 acidic basic SubmitPrevious Answers Correct…

A: The concentration of hydronium ion is calculated using the pH value as,

Q: A beaker contains a total concentration of 0.73 molar of weak acetic acid with pKa = 5.55 and pH =…

A: We would show dissociation equation of acetic acid and write ICE table to calculate the…

Q: What is the pH of a solution that is 0.28 M in acetic acid, HC2H3O2, and 0.69 M in sodium acetate,…

Q: Given that pKb for iodate ion (IO-3) is 13.83, find the quotient [HIO3]/[IO-3] in a solution of…

A: For a weak base, pH can be calculated as: pOH=pKb+logHIO3IO3-

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

Q: Tyrosine is a triprotic weak acid, with pКа1-2.41, рКа238.67, and pКа3-11.01. a) calculate the final…

A: a) An amino acid is composed of amino group, carboxylic group and a side chain. This side may…

Q: Calculate the pH for a mixture of 0.5 mole of benzoic acid and 1 mole of Sodium Benzoate. The pKa of…

A: Given-> Mole of benzoic acid = 0.5 mole Mole of sodium benzoate = 1 mole pKa of benzoic acid =…

Q: Calculate the pH and Ka for HC₂H3O2 if in a 1.0000 M solution of HC₂H3O2 in water there is 0.99600 M…

A: pH :- The negative logarithm to the base 10 of hydronium ion concentration , [H3O+] expressed in…

Q: What is the pH of a 0.318 M C6H5CO2H M solution if the Ka of C6H5CO2H is 6.5 x 10-5? Your Answer:…

Q: LiF has a pKsp of 2.77. HF has a pKa of 3.17. LiF is dissolved at 0.250 F after addition of strong…

A: Formality is the number of formula mass in gram present per litre of a solution. Formula mass of…

Q: Given the titration shown below, what are the pKa values of the diprotic base? 2.1 and 7.6 7.6 and…

A: The important points regarding a titration curve are: 1) The sudden increase or decrease in the pH…

Q: Calculate Kb for [A^ - ] if the ionization constant of HA is 3.5 * 10 ^ - 4.

A: Given :- Ka for HA = 3.5 × 10-4 To be calculated :- value of Kb

Q: 5. The pKa of acetic acid (HA) is approximately 4.8. If a solution of acetic acid is brought to pH =…

Q: Which data point(s) reflect pH = pka? 14 12 10 (iv) PH 6. (iii) (ii) 4. (i) 10 15 20 25 30 35 40…

A: Henderson- Hesselbalch equation pH = pKa + log [salt]/[acid] When [salt] = [acid] Then pH = pKa

Q: Consider two acids: HCO,H (formic acid, pK, = 3.8) and CgH;C0,H (benzoic acid, pK, = 4.2). Which…

A: Formic acid have highest Ka value .

Q: Calculate the pH of each solution. A solution containing 0.0289 M maleic acid and 0.040 M disodium…

A: An aqueous solution consisting if weak acid and it's conjugate base or weak base with its conjugate…

Q: Charlic acid is a monoprotic acid: R-COOH > R COO + H* Calculate the fraction of Charlic Acid that…

A: The reaction given is, => RCOOH (aq) → RCOO- (aq) + H+ (aq) Given: pH = 5.1 And pKa of RCOOH =…

Q: Calculate the pH of a 0.471 M aqueous solution of diethylamine ((C₂H5)₂NH, Kb = 6.9x10-4). pH =…

Q: 1. Please calculate the pH for each of the following if the pKa is 6.1: a. pCO, = 32 Total CO, = 45…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: d. The Ka of acetic acid (found in vinegar) is 1.8×10-5. Then the pKa of formic acid is

A: Acid Dissociation constant :- The relative strength of an acid is determined by its dissociation.

Q: Use average value from table above, calculate the pKa and Ka. (Hint: at half equivalence point, pH =…

A: pH is used to measure the strength of acidity in the solution by calculating the concentration of…

Q: 4.Calculate the pH of a solution that is 0.311 M in nitrous acid (HNO2) and 0.189 M in potassium…

A: Te o predict the pH

Q: The theoretical pKa of a weak acid is 3.54. Calculate the pKa experimental error of a solution…

A: Solution which resist in pH change value upon addition of small amount of strong acid or base (less…

Q: The pH of an aqueous solution of weak monoprotic acid is 3.15. What is the initial…

A: Given that pH of weak monoprotic acid = 3.15 pKa for weak monoprotic acid = 5.74 For weak acid, pH…

Q: What is the pH of a 0.311 M C6H5CO2H M solution if the Ka of C,H5CO2H is 6.5 x 10-5? Your Answer:…

A: We have given that Molarity of C6H5COOH = 0.311M Ka of C6H5COOH = 6.5×10-5 Find pH we know…

Q: beaker contains a total concentration of 0.53 molar of weak acetic acid with pKa = 5.12 and pH =…

Q: The theoretical pka of a weak acid is 3.54. Calculate the pKa experimental error of a solution…

Q: 3. By definition the pH of a dilute solution of a weak acid equals its pKa only when the…

Q: Q5 – The following properties of a sample collected from a lake are measured: pH = 10.24 & carbonate…

A: Given,pH=10.24Concentration of CaCO3=120mg/LK1=10-6.3K2=10-10.3Molar mass of CaCO3=100g/molMolarity…

Q: What is the pH of a 0.237 M C6H5CO2H M solution if the Ka of C&H5CO2H is 6.5 x 10-5? Your Answer:…

Q: The pKa of HX is 9.34. Calculate the pH of a 0.418 M solution of HX.

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: Compute for the pKa of benzoic acid (Ka = 6.3 × 10-5).

A: Given acid dissociation constant (Ka) of benzoic acid = 6.3 × 10-5 acid dissociation constant (Ka)…

Question

The ionization constant Ka for formic acid is 1.77x10⁻⁴. What are the the pKa for formic acid and the pH of a 1 M solution of this weak acid?

A) pKa = 3.34 and pH 4.3

B) pKa = 3.8 and pH = 1.9

C) pKa = 3.34 and pH = 2.17

D) pKa = 2.9 and pH = 1.4

E) pKa =7.8 and pH =12.2

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Formula

VIEW

Calculation

VIEW

Answer

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

There are many organic acids and bases in our cells, and their presence modifies the pH of the fluids inside them. It is useful to be able to assess the pH of solutions of acids and bases and to make inferences from measured values of the pH. A solution of equal concentrations of lactic acid and sodium lactate was found to have pH= 3.08. (a) What are the values of pKa and Ka of lactic acid? (b) What would the pH be if the acid had twice the concentration of the salt?
A student determines that the value of Ka for H2SO3 = 2.3×10-2 . What is the value of pKa?
If the concentration of an acid in solution is 2.2 times larger than the concentration of its conjugate base, and the pH of the solution is 3.5, what is the pKa of the acid? Include the answer to 3 significant figures
pH = 7.15 + log [0.25]/[0.50] pH = pKa + log [0.33]/[0.11]; (Ka = 6.3096 x 10-8) [OH-] = 2.78 x 10-4 % ionization of 34 relative to pKa value
Acetic acid (CH3COOH, abbrev HA) is a very common weak acid with pKa = 4.75 (at 25oC and low ionic strength) A] Write down the dissociation equation of the weak acid HA in aqueous solution, derive the respective formulae for the dissociation constant Ka and pKa. B] Calculate pH of the diluted solution of acetic acid with concentration, c = 0.05 mol/dm3 C] What is the approximate pH of the aqueous acetate buffer solution composed of dissolved mixture of acetic acid (HA) and sodium acetate (NaA) in the same respective concentrations? What is the working pH range of acetate buffers? D] How can you prepare exactly 1 dm3 of acetate buffer solution with required pH 5.0 and the total concentration [HA + NaA], c = 0.01 mol/dm3 if the stock solution of acetic acid (HA) with concentration, cHA = 0.1 mol/dm3, anhydrous sodium acetate (NaA, MT = 82.03 g/mol) and purified water are available? E] Acetate buffer solution may be also prepared by the partial neutralization of HA with NaOH: 20 cm3 of…
The pH of an aqueous solution of weak monoprotic acid is 3.15. What is the initial concentration of the acid if the pKa of the acid 5.74? A. 0.657 M B. 0.315 M C. 0.274 M D. 0.387 M E. 0.0576 M
What is the salt and acid concentration for 1 Molar phosphoric acid solution at pH 7.0 when pKa is 7.21? Salt is: Na2HPO4 Acid is: NaH2PO4 (antilogy of 0.21 is 1.6281)
The pH of an aqueous solution of weak monoprotic acid is 3.15. What is the initial concentration of the acid if the pKa of the acid 5.74?
What is the pKb of the conjugate base of a weak acid that has a pKa equal to 3.52? (temperature is 25ºC)
Draw a diagram (picture) showing the principle species in solution as a function of pH for a mixture of 0.0200 M formic acid and 0.0100 M ascorbic acid. The Y axis should be concentration. The X axis should be pH and you will need to look up the pKa values
The pKa values of 4 acids are given below. Acid HA1 HA2 HA3 HA4 pKa 4.76 3.45 7.63 5.23 Which of the following solutions does have the highest pH? Choose one option only. Options: a. 0.30 M A2- (aq) (conjugate base of HA2) b. 0.30 M A3- (aq) (conjugate base of HA3) c. 0.30 M A1- (aq) (conjugate base of HA1) d. 0.30 M A4- (aq) (conjugate base of HA4) e. All the 0.30 M bases in this question have the same solution pH.
The value of Ksp for Mg3(AsO4)2 is 2.1 x 10-20. TheAsO43 - ion is derived from the weak acid H3AsO4 (pKa1 =2.22; pKa2 = 6.98; pKa3 = 11.50). (a) Calculate the molarsolubility of Mg3(AsO4)2 in water. (b) Calculate the pH of asaturated solution of Mg3(AsO4)2 in water.