The pKa of salicylic acid is 2.97 whereas the pKa of benzoic acid is 4.19. Why is salycilic acid a much stronger acid compared to benzoic acid? (It is not enough to say “because the pKa is lower...”)

Q: B. Using two acids, HF and CH;CO,H, and their conjugate bases, write a Bronsted Lowry acid base…

A: Bronsted-Lowry acid-base theory: The Bronsted-Lowry acid-base theory states that the acid is a…

Q: What is the dominant form of citric aciAcid (a triprotic acid) at pH of 6 (pka1 = 3.128, pka2 4.761,…

A: Henderson-Hasselbalch equation represents a relationship between the pH, the pKa (acid dissociation…

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: What fraction of iminodiacetic acid is in each of its four forms (H, A H,A, HA, A) at pH 3.357? The…

A: pH=3.35=-log [H+]or, [H+]=10-3.35=4.47×10-4

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: I  need help understanding why the ratio of Acetate:Acetic acid = 3.5:1 and why the total amount…

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Q: what is the ph of a 0.10m solution of an acid with a pKa of 8.4?

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

A: The Acetic Acid/acetate buffer is acidic buffer with Henderson Equation as: pH=pKa + log [c2/c1] pH…

Q: What is the pKa of Sylvianic Acid if it is 2.3% dissociated at pH = 10.26?

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Q: Which statement correctly describes Ka, pKa and the strength of a weak organic acid? The larger the…

A: The acid dissociation constant (Ka​) is a quantitative measure of the strength of an acid in…

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: please find Ka values of Succinic Acid (C4H6O4)

A: Succinic acid is basically a dicarboxylic acid. It has two potential protons to donate so it's a…

Q: allergic to the odor of ammonia. You smelled an ammonia solution with the pH 9.3 yesterday and it…

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Q: What is the Kb of a base whose pKa is 8.9?

A: The question is based on conjugate acid base principle. a strong acid has a weak conjugate base and…

Q: The Ka of an acid is determined to be 0.00589. What is the pKa?

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Q: similar to the question what is the pKa of formic acid when the pH of buffer is 4.18?

A: Given that, for a buffer solution pH = 4.18. Also, [HCOOH] = [HCOO-]. We have to determine the pKa…

Q: The pKa values of the conjugate acids of 2-aminopyridine (6.71) and 4- aminopyridine (9.11) are as…

A: The  2-aminopyridine and 4- aminopyridine  are  more basic compounds because of  presence of  strong…

Q: The structure for the amino acid cystine is provided:  pka for (CO2H)= 1.8 pka for (NH2)= 10.75…

A: A group ionizes into proton and negative charge if pH of the medium is greater than pKa. Neutral…

Q: Find the pH of 0.047 M trimethylammomium chloride solution given a pKa of 9.799 for the…

A: The objective of this question is to calculate the pH of a 0.047 M trimethylammonium chloride…

Q: If 100 mls of 0.02 M HCl added to 400 mls of 0.5 M glycine buffer at pH10.4, what is the resultant…

A: A buffer solution is the solution composed of acid and conjugate base in such a way so that the pH…

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: 1. Based on your knowledge on pKa, pH and ionisation describe a method whereby you can separate a…

A: Ans 1. One method to separate a solution containing sodium bicarbonate and ascorbic acid is based on…

Q: The forensic technician at a crime scene has just prepared a luminol stock solution by adding 15.0 g…

A: Luminol has chemical formula 5-amino-2,3- dihydro-1,4-phthalazinedione used for forensic science…

Q: Show work. Don't use Ai for answering this

A: Step 1: millimoles of trimethylamine = 89.1 * 0.33  = 29.403 millimoles of HClO4  added  = 24.8 *…

Q: What is the K₂ of an acid whose pka is 9.01?

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Q: What is the pka of an acid with a Kg=4.5 x 10-6? Give your answer with two digits after the decimal…

A: To represent the strength of an acid, pKa value is used. The negative base-10 log (or logarithm) of…

Q: Most PFAAS have extremely low pka values (< 1), while oceans and rivers tend to be slightly basic…

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Q: What is the ratio of conjugate base to undissociated acid for a weak acid with a pk, of 4.4 at a pH…

A: Given :  pKa = 4.4  pH = 9  To determine :  Ratio of conjugate base to weak acid

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

A: pKa for AH = 4.7 pKa = -log Ka Ka = 10-pKa Ka1 = 10-4.7 = 2×10-5   pKa for BH+ = 5.1 Ka2 = 10-5.1 =…

Q: I would like to have a follow-up question.  Would you get an answer of 4.05 pH if the value of your…

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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: Both mepivacaine and bupivacaine are local anesthetics used in epidural blocks. Mepivacaine has a…

A: Since more the value of Ka , more will be the dissociation of the acids  Hence more will be the…

Q: You need to control the pH of a solution at 4.5 You have solid citric acid (pKa1= 3.13, pKa2=4.76,…

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Q: Write the chemical reactions whose equilibrium constants are K, and K, for imidazole (C,H,N₂) and…

A: a.) Kb reaction is corresponding to reaction of a base to gain H+ .  b ) Ka reaction if of acid to…

Q: 19.6. The odor threshold of 4-chlorophenol is 30 ppm, (i.e., 30 µL 4-chlorophenol per liter of air).…

A: The objective of this question is to show at two different pH levels, namely pH 6 and pH 10, and…

Q: Explain why the mixture is buffered at pH 6 to 9?

A:

Q: Questions: 1. If a fatal does of atropine is 100. mg, what amount of com- pound (moles) is this? 2.…

A: (1) The given problem can be solved by using the formula given below as; Moles = Given massMolecular…

Q: 11. Which conjugate base should be the strongest out of these choices? (pKa values of their…

A: Useful Concepts: Stronger is the acid, weaker is its conjugate base. pKa and pKb are related as 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: 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: 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.…

Amines

Amines are organic compounds with a nitrogen atom having a lone pair of electrons on it. They are derived from ammonia (NH3) wherein hydrogen atoms are substituted by an aryl or alkyl group.