How would the pKa values of carboxylicacids, alcohols, ammonium ions 1RNH32 + , phenol, and an anilinium ion 1C6H5NH32 + change if they were determined in a solvent less polar than water?

Q: Acid HNO3, 50°C O2N A B

A: Concept: it is a nitration reaction. pKa of HNO3 is -1.3, any acid lesser pKa than HNO3 will be used…

Q: calculate the % yield of preparation of 2-aminobenzoic acid: mass of phthaliamide = 2.95g mass of…

A: In the  question two mass of 2-aminobenzoic acid is given. Hence, the individual percent yield is…

Q: Calculate the pH of a solution containing 0.05mol/dm3 benzoic acid, C6H5COOH and 0.05mol/dm3 of…

A:

Q: In charts the pKa of acids are often given instead of the Ka values. For the 5 acids below predict…

A: There are two types of bases/acids. One is strong base/acid which is completely dissociable in into…

Q: Match the descriptions to one of the unknown compound from the list  MP: 101-106 oC Light brown…

A: Using the descriptions provided, the unknown compound has been predicted below.

Q: What is the conjugate acid of CO32-?

A: Bronsted-Lowry acid-base theory: According to the Bronsted-Lowry acid-base theory, acid is a…

Q: Provide the structure of compounds A through F

A: Given:The following steps are shown in the reaction sequenceReaction of 1-bromo-1-methylcyclopentane…

Q: The y-carboxyl group of Glu has a pK.-value of 4.2; a-COOH = 2.2; a-NH, = 9.7 Calculate the…

A: Glutamic acid is an acidic amino acid. It has three ionizable groups i.e. gamma carboxyl, C-terminal…

Q: The pKa of Cu2+ is 10.7 in aqueous solution. Would you expect the pKa of Cu2+ to be higher, lower,…

A: pKa = - log Ka

Q: How does the pKe of the conjugate acid of benzylamine (CgH5CH,NH2) compare to the pk,'s of the…

A: pKa is inversely proportional to acidity strength. A more acidic molecule will have lower pKa value.…

Q: What is the pKb of the conjugate base of a weak acid that has a pKa equal to 5.29 at 25ºC?

A: To get the pKb of the base (B) you MUST subtract the pKa from 14. The reason for this is that the…

Q: Drug A is a weak acid that has a pKa value of 4. For the Drug A dissolved in Buffer B, calculate…

A: pH is simply a measure of the concentration in a given solution . pKa is defined as the  pH were a…

Q: Explain the difference in the pKa values of the piperidinium and aziridinium ions

A: Given,

Q: The dissociation constant of ethanolamine is 2.77 x 10 – 5 at 25 °C. Calculate its pKb value.

A: Given data: The dissociation constant of ethanolamine = 2.77 x 10 – 5. To find: The pKb value.…

Q: 13- If you were to have a mythical AA based on Aspartic acid in which the carboxylate on the side…

A: Amino acids are the molecules that contain amino and carboxylic acid group. When both these groups…

Q: Aromatic Primary - aliphatic secondary and tertiary amines with 2 N HCl and 5% NaNO2 on ice Write…

A: The reaction  of hydrochloric acid with sodium nitrite gives nitrous acid and sodium chloride as…

Q: Benzoic Acid IR 103 100 95 90 2834.7 b .%T 85 em-1, 84.10%T 80- 1453.30cm-1, 81.46%T 1421.76cm-1…

A: Analysis of FTIR spectrum of benzoic acid.

Q: In the gas phase, the base strength of amines increases regularly along the series NH3 < CH3NH2 <…

A: Gas phase basicity : Basicity of a compound depends on the availability of l.p. on N atom. Greater…

Q: Biotin has a single ionizable group with a pKa of 4.5. If you dissolved biotin in an aqueous…

A: The question is based on the concept of biomolecules. We have to account for the dissociation…

Q: 3. The pKa,1 and pKa,2 of ortho and para isomers of phthalic acid (diprotic acid) are shown below:…

A: Here we have to explain the difference between pKa value of phthalic acid and terephthalic acid.

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: What is the pH of a 0.050 M solution of triethylamine with the Kp value of 5.3x 10-4?

A:

Q: The structure of the molecule below shows its structure where all of the ionizable/protonatable…

A: The -COOH and -NH3+ group of a peptide is deprotonated at pH greater than the pKa value. The…

Q: Nicotine (structure shown below) has pKa values of 3.2 and 8.1. Account for these values. In your…

A: According to the acid-base theory put forward by physical chemist Gilbert N. Lewis the chemical…

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: Explain the difference in the pKa values of the piperidinium and aziridinium ions:

A: pKa is the acid dissociation constant. pKa is used to determine the strength of an acid. if the pKa…

Q: si-oH tH, = si-0-SH+H20 know. thart, silican gel absorb ethanol,so We will happenT How the reaction

A: The molecule silicon dioxide is commonly called silica gel. It has various pores in its lattice…

Q: Write the reactions of Aromatic Primary - aliphatic secondary and tertiary amines with 2 N HCl and…

A: All the 3 amines namely, aromatic Primary amine, aliphatic secondary and tertiary amines react with…

Q: Which of the compounds below form water soluble salts (quantitatively) when added to a saturated…

A: In the given set of molecule only compound a will form slat with sodium bicarbonate as it contains…

Q: Draw the structure of the most abundant form of cysteine in solutions whose pH values are 1, 4, 6,…

A: The molecules found inside human body which have carboxylic and amine group containing monomer units…

Q: Determine AHnn for the generic reaction below. 3AB2 (9) • C28 ()-2CAB3 (aq) + AB (9)

A: Standard enthalpy of formation for a reaction is equal to the sum of enthalpy of formation of…

Q: он OH OH он OCH3 CI CH3 10.0 10.2 9.2 7.7

A: Give an explanation, why the acidity of these phenolic derivatives give these pKa value?

Q: 3-(N-Morpholino)-2-hydroxy-propanesulfonic acid (MOPSO) is a common buffer used in biology and…

A: b. Molar concentration of the added acid =0.015 mol500×10-3 L=0.03 mol/L

Q: Indole smells terrible in high concentrations but has a pleasant floral-like odor when highly…

A: Huckel's rule for aromaticity: The compound must be cyclic planar geometry with (4n+2) pi electrons.…

Q: Explain the observed difference in the pKa values of the conjugate acids of amines A and B.

A: From the pka value of A we can tell that the among the two compounds given A is more stable than B…

Q: What is the approximate pka of pyridine? O 20 O 5 O 10 O 15

A: The pKa value is one method used to indicate the strength of an acid. pKa is the negative log of the…

Q: 9. The following molecular tweezers bind 2,4,5,7-tetranitrofluorenone (TENF). The association…

A: A tweezer is a chemical structure that have two or more binding sites and which converge on a single…

Q: Most of the pKa values given in this text were determined in water. How would the pKa values of…

A: The strength of a chemical substance acidity is determined by its pKa value. It is actually the…

Q: An alpha carboxylic acid group (COOH) of protein amino acids has a pka = 2.4. The ratio of %3D…

A: -COOH,  -COO-  are acid and its conjugate base. The ratio of -COO-/ COOH can be determined by…

Q: v 12.75a Of the following, which represents a logical retrosynthesis for target molecule A? MgBr OH…

A:

Q: Ramachandran plots for two amino acids differ significantly from that shown in Figure 2.23. Which…

A: Given that,

Q: For an acid HA with a pKa of 5.2, what is the ratio of the concentration of the conjugate base to…

A: The dissociation reaction of acid HA can be written as  =&gt; HA ------&gt; H+ + A-  Conjugate base…

Q: Most of the pKa values given in this text were determined in water. How would the pKa values of…

A: The solubility and dissociation of compound depend upon the type of solvent used for dissolution for…

Q: Give the chemical names of the corresponding structures for compounds A and B. P4O10 H;O*…

A: Given is organic reaction

Q: Why are carboxylic acids more acidic than alcohols? The increased inductive effect of the alkyl…

A: Acidic strength of organic acids can be compared with their pKa value which is determined…

Q: Chemistry Based on the structure shown, what kind of interactions do you expect between HM and the…

A: Cu2+  - chelation  metal bind with two donar site.  Hydronium ion - Protonation Glycerol and glucose…

Q: Why is the pKa value of protonated hydroxylamine (6.0) so much lower than the pKa value of a…

A: The pKa value of hydroxylamine and methyl amine is shown below:

Q: Which of the following in each pair is likely to be moresoluble in hexane, C6H14: (a) CCl4 or CaCl2,…

A: Since hexane is a non polar molecule  hence the molecule which will have less polarity will be more…

Q: (b)Given the K, and pK values of the following compounds: Hydrobromic acid (HBr), K= 1.0 x 10;…

A: Solution: We have general knowledge about pH , pKa.  From the pKa we can know about the acidic…

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.