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 weaker?

Q: The Ka for an acid is 7.91 x 10-29. Calculate the pKa for this acid.

A: The pKa for the acid is to be calculated

Q: The Ka for an acid is 4.45 x 10-10. Calculate the pKa for this acid.

A: Ka = 4.45 x 10-10

Q: table below contains the pKa values of four weak acids.  Which acid is the weakest?

A: Given :-    pKa HF 3.14 HNO2 3.39 H2SO3 1.81 H2CO3 6.37 To identify :-…

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: 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: Eyplain the tremendous difference in pKa values for the following two apparently similar compounds.…

A:

Q: The ionization constant Ka for formic acid is 1.77x10⁻⁴. What are the the pKa for formic acid and…

A: pKa=-log(Ka)pH of a weak acid;pH=12[pKa-logC]Where, C is concentration of the 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: Knowing the approximate pKa values above will help in answering this question. 3. pH = 3.0 Which…

A: pKa value is more less acidic nature.  In generally anion less pKa value that means basic nature.…

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: 13. The pka of an acid is 2.35. What is the acid-dissociation constant of the acid? O 4.5 x 10- O…

A: We can solve the Given problem by recalling the following equation Pka = -logka Where ka =…

Q: A weak acid has a pKa of 8.48.  What is the pH if the solution has 3,444 times more HA than A-?

A: The most effective buffers contain a weak acid with pKa value close to the buffering pH and its…

Q: Calculate the acid dissociation constant (Ka) of acetic acid when pka = 4.64

A:

Q: A weak acid has a pKa of 6.44. If the pH of the solution is 7.22, what percentage of the acid is…

A:

Q: A student determines that the value of pKa for CH3COOH = 4.57 . What is the value of Ka?

A: Carboxylic acids (containing -COOH), such as acetic and lactic acids, normally have a Ka constant of…

Q: The base ephedrine has a pKa value of 9.6. Calculate the theoretical end point pH when a 0.1 M…

A: Ephedrine, the organic molecule used in the prevention of low blood pressure and asthma. The…

Q: Which of the following acid/ conjugate base pairs would function best as a buffer at physiological…

A: 1- First we should know about physiological pH it's value is 7.40 it's maintain the blood pH because…

Q: 7. Given the pKa information for different acids below, place the following acids in order of…

A:

Q: Listed below are two organic acids and their pKa values. Calculate the acid dissociation constant,…

A: 1) The strength of an acid is related to its pKa as: Acidic Strength ∝1pKa∝Ka That is, lower the…

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: Which of the following acids is the weakest? * Acid THREE (pKa = 6.4) Acid FOUR (pKa = 3.74) Acid…

A: Given  Acid THREE (pKa = 6.4) Acid FOUR (pKa = 3.74) Acid ONE (pKa = 3.14) Acid TWO (pKa = 3.35)…

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: What is the pKa value of Tris-HCl?

A: The molecular formula of Tris-HCl is: NH2C(CH2OH)3 ·HCl

Q: Calculate the pH of a 0.12 M solution of hydrocyanic acid (HCN), which has a pKa of 9.31.

A:

Q: What is the Ka of an acid that has a pKa value equal to 3.93?

A: The pKa value as the negative logarithm of the Ka value: pKa = -log Ka. If we already know the pKa…

Q: HCECH + но HCEC + H,0 b) OH H + Но H + H,0

A:

Q: Acetic acid pKa = 4.76, what does Ka =_________ M

A: The equation is given as:

Q: For the expression pH=pK₂ + log What is [A]? [B] [A] the pH = 4.130, the pka = 4.200, and [B] =…

A: Answer: Both the questions are based on the skillset of solving the mathematical equation in…

Q: The pKa for the first protonation of nicotine (2) is 8.02. What is the pH and the fraction of…

A:

Q: Phosphoric acid (H₃PO₄) is a triprotic acid with pKa values of 2.12, 7.21, and 12.32. It is a useful…

A: Buffer solution is one that resists change in pH. H3PO4 is triprotic acid, so, it has three pKa…

Q: Which of the following has the lowest pKa value

A: The value that expresses negative logarithm10 of Ka (the dissociation constant of acid) is known as…

Q: A solution containing a monoprotic weak acid (HA) that is 8.09% dissociated was found to have a pH…

A: A solution contains monoprotic weak acid (HA) that dissociate 8.09%  And PH = 1.92  [A-] = ? at…

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: A weak acid has a pKa of 7.48. What is the pH if the solution has 6,753 times more HA than A-?…

A:

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: Vitamin C has a pKa value of 4.17. What is its Ka value?

A: The relation between Ka and pKa is given by :                  Putting the values in equation (1):…

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: Aspirin has a pka 5 it will be more than 99% ionized in wha

A:

Q: A 0.022 2 M solution of HA is 0.15% dissociated. Calculate pKa for this acid.

A: Acid is the substance that gives proton while the base is the substance that gives hydroxide ion in…

Q: The ionization constant,  Ka, for benzoic acid is 6.28 ×10-⁵. What is the pKa of this acid? a)…

A:

Q: 3. What is the pH of water at 25°C that contains 0,75mg/L of hypochlorous acid?. Assume equilibrium…

A: Given data Concentartion of HOCl = 0.75 mg/L pKa (for HOCl)=7.54 Atomic mass are H=1 O=16 Cl=35.5

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 some hypothetical acids (HX, HY, HZ, HG) are shown below: HX pka=2.50,  HY…

A: Bronsted-Lowry theory of acids and bases :-  According to this theory Acid is a substance which can…

Q: Calculate the pH values of the following solutions: a. a 1.0 M solution of acetic acid (pKa = 4.76)…

A: From given data For part (a)                              pKa=4.76 [CH3COOH]=1.0 M For part (b)…

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.