MCQ 29: In acidic solutions, amino acids become A. positively charged B. negatively charged C. pH of 7 D. alkaline

Q: The benzylammonium ion (c6H5CH2NH3+) has pka=9.33 and the propylammonium ion has pka=10.71. Which is…

A: Given:-              The benzyl ammonium ion (c6H5CH2NH3+) has pka =9.33 and the propyl ammonium ion…

Q: NaSCH3, DMSO, r.t. ...|CI е. -D NaOCH3, HOCH3 heat H f. H Br NaOCH3, HOCH3 heat DIl Ph Ph d.

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Q: Guanidine group has a basicity stronger than ammonia due to alpha effect .a O none of them .b O…

A: Guanidine bases have stronger basicity than ammonia as in guanidine, alkyl groups donate electron…

Q: #9 Classify these amino acids as acidic, basic, neutral polar, or neutral nonpolar. A- Leucine,…

A: Answer  Classify these amino acids as acidic, basic neutral polar or neutral non polar

Q: For each amino acid: [1] give the name; [2] give the threeletter abbreviation; [3] give the…

A: Amino acids can be defined as the organic compound containing amino group -NH2 and carboxylic acid…

Q: The pKa of ascorbic acid (vitamin C, page 55) is 4.17, showing that it is slightly more acidic than…

A: Deprotonation reaction mainly reflects the proton (H+) elimination from any particular acid existing…

Q: What is the pI of the amino acid show below?

A: PI is the isoelectric point where there is no net formal charge. Given : pKa1 = 2.18 pKa2 = 8.95…

Q: Questions and Problems Q1 Which of the solutions in Part B were basic? Q2 How do soaps made from…

A: a) In an aqueous solution the acidic behavior and basic behavior of a solution is estimated by ph.…

Q: is slightly acidic ?

A: Atmospheric acidity is the major cause affecting the global atmosphere.

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: 0. Draw the ionic form found at a pH of 3.7 for the nonstandard amino acid that is shown below in…

A: We have to predict the structure of ionic form at given pH.

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: copy nces. agalog olagiarize. 8. b. C. 20. Enumerate the equstions or formulas for pH, pOH, [H+] and…

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Q: Phenol has a pKa of 9.99.  Calculate the pH of a 0.195 M solution.

A: Given information is as follows: pKa=9.99 Molarity = 0.195 M Determination of Ka from the given pKa…

Q: draw imidazole functional group, with pKa=6.0 as it exist at ph 5 and ph 8 ( draw twice

A: Imidazole is a nitrogen containing heteroatomic compound.

Q: Arsenic acid, a triprotic acid, has 3 pKa values (2.24, 6.96, and 11.50). What is the predominate…

A: We will see the predominant form of arsenic acid at a pH = 4.00  You can see below details…

Q: If the pH is 2, what is the %HA at of a molecule has a pKa = 4? Report the answer to one dpcimal…

A: Given : pH of solution = 2  And pKa of acid = 4. The partial dissociation reaction of HA can be…

Q: Classify this amino acid.   Select one: nonpolar polar basic acidic none of the choices shown

A: Since we know that amio acid is classified as acidic or basic on the basis of number of amino  group…

Q: The acid HA has pKa  7.00. (a) Which is the principal species, HA or A, at pH 6.00? (b) Which is…

A: Ka is the acid dissociation constant, which establishes relationship of dissolution of weak acid in…

Q: Draw the structure of CH3OH (pKa = 15.5) at pH = 2, pH = 7, and pH = 10.

A: Henderson-Hasselbalch equation explains the relationship between pH of solution and pKa of acid. For…

Q: What is the [H3O +] of a pH 8.39 (watch your sig figs)?

A: pH of a solution is defined as negative log is concentration of H+ ion.  pH=-log[H3O+]

Q: Acid Ka A HNO2 4.50×10-4 B HClO 3.50×10-8 (1) The acid with the smallest value of pKa is…

A: (1)  Ka of HNO2 = 4.50×10-4   Ka of HClO = 3.50×10-8   Equation: pKa = - log Ka   For HNO2 : pKa = -…

Q: A weak acid has a pKa of 7.6. What is the proportion of A- to HA if pH is 9.08?  Round to one…

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Q: Mr. A. Sidick's arterial blood values were: pH = 7.25, pCO2 = 32 mmHg, and HCO3- = 14 mEq/L.…

A: Normal  values   pH  = 7.35 -7.45  pCO2=35 -45 mm of Hg  HCO3-=22-26 Meq/litre As per given clinical…

Q: If the pH is 4, what is the %HA at of a molecule has a pKa = 4? Report the answer to one decimal…

A: The degree of dissociation α is used to measure the amount of acid dissociated and is represented as…

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: The amino acid serine, NH2CH(CH2OH)COOH has the following pKa values: pKa1 = 2.19 pKa1 = 9.21. What…

A: 1) The correct option is - (c) Solution - According to the question  Given - Amino acid are…

Q: Water has a pKa of 15.7. Methane has a pKa of 48. Hydrofluoric acid has a pKa of 3.2. Acetic acid…

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Q: Calculate the pH of a 0.0148 M solution of arginine hydrochloride (arginine-HCI, H2Arg+). Arginine…

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Q: Question 2 Which of the following statements are FALSE? Multiple answers: Multiple answers are…

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Q: Calculate the pH at 25 °C of a 0.52M solution of trimethylammonium chloride ((CH,) NHCI). Note that…

A: pKb for (CH3)3N = 4.19 pKa for (CH3)3NH+ = 14 - pKb = 14 - 4.19 = 9.81 Ka = 10–9.81=1.55 × 10–10 The…

Q: How would you explain the amphoteric behavior of amino acids.

A: Amino acids are organic compounds that combine to form proteins. Amino acids and proteins are the…

Q: Name two causes of rancidity in oils

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

Q: a. Neutral/ non-polar/ acidic/ basic H2N ÇH COH CH OH CH3

A: Amino acids are classified mainly as polar, non-polar, acidic, basic. An amino acid is said to be…

Q: Erythromycin is a weak base with a pka of= 5.2 What will be the ionisation state of the drug in…

A: Actually Erythromycin is a weak base with pKb = 5.2  Hence pKa = 14 - pKb = 14 - 5.2 = 8.8  The…

Q: 8:29 PM Mon May 3 L 80% | 品Q Chem Acid or bas bess N-OH (a) Acid or base H. Cyclic isomer (b) H2N…

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Q: A weak acid has a pKa of 8.03. What is the pH if the solution has 9,860 times more HA than A-?…

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Q: Which of the following explains why alpha-amino acids, the building blocks of proteins, are nearly…

A: Strong acids are those in which the conjugate base of this acid is stable. As amino are stronger…

Q: How many acidic hydrogens do the amino acid proline have?

A: The species which furnishes hydrogen ion are known as acid

Q: What fraction of iminodiacetic acid is in each of its four forms (H3AH3A H2A−H2A−, HA2−HA2−, A3−A3−)…

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Q: The pka's of the amino acid asparagine are 2.02 and 8.80. Select the asparagine structure that…

A: Asparagine Structure

Q: MCQ 31:1 mol of a hydrated salt is obtained from 1 mol of A. hydrated solvent B. hydrated solute C.…

A: Welcome to bartleby !

Q: (b) On the structure above indicate what changes in structure produce the acid Form of codeine.

A: The Bronsted-Lowry acid-base theory was purposed by Bronsted and Lowery is called Bronsted-Lowry…

Q: When adding formaldehyde solution to gamma-aminobutyric acid: A) The amino group reacts B) The…

A: Gamma-aminobutyric acid (GABA) contains the two functional group i.e. carboxylic acid and amino…

Q: oth aspirin and salicylic acid are weak organic acid. The pKa of aspirin is 4.57, whereas, the pKa…

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Q: Are negatively charged amino acids acidic or basic and why? Are positively charged amino acids…

A: According to Bronsted and Lowry definition of acid and base, an acid is a chemical species which has…

Q: H2N ОН NH2 The pl of lysine (above) is 9.87. 1. What will be the overall charge of lysine at a pH of…

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Q: 3. Rx Dipivefrin HCI Scopolamine HBr NaCI Purify. H2O ad Make isoton. Sol. 1/3 % q.s. 30 Sig. Usie…

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Q: At a pH of 7, what charged groups are present in leucine? O a. NH2+ O b. CO2- O c. NH3+ O d. NH3+…

A: pI is the isoelectric point which is the pH at which zwitter ion formation takes place.  This means…

Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.