The amino acid serine has two pKa values, one for its carbonyl group (pKa = 2.21) and one for its NH3+ group (pKa = 9.15). These pKa values help to determine the isoelectric pH (also known as the isoelectric point, pI). The pI is the pH at which the substance has a charge of zero. It affects how the amino acid moves in gels of different pH values during electrophoresis.

Q: Buffers that are based on 3-morpholinopropanesulfonicacid (MOPS) are often used in RNA analysis. The…

A: The pH range of the buffer solution is 6.5 to 7.9 The pKa value gives us the idea of the acidic…

Q: Proteins are characterized by their isoelectric point (pl), at which they carry no net charge.…

A: Protein A has pI = 5.1

Q: 25.00 mL of a saturated Ca(OH)2 sample requires 22.50 mL of 0.0250 M HCl to neutralize it. Calculate…

A: Given that, The Ksp expression for the process is given below Ca(OH)2 (s)    ⇌   Ca2+ (aq.)  +…

Q: Calcium carbonate is sparingly soluble in water. CACO:(s) = Ca²“(aq) + CO;² (aq) Kp = 3.4 x 109…

A: Calcium carbonate is a sparingly soluble salt.

Q: Given that the solubility reaction for calcium phosphate is…

A: Hare product PO43-  is a conjugate base so addition of acid give a soluble salt . according to La…

Q: A group of students were able to isolate a novel amylase from the saliva of a pig found in Country…

A: Given the desired pH = 7.4  We can find the most suitable buffer based on the Henderson equation.

Q: Define the term chelate effect?

A:

Q: ACID-BASE EQUILIBRIA AND SALT EQUILIBRIA (COMMON-ION EFFECT, BUFFER AND SOLUBILITY EQUILIBRIA) A…

A: The mixture of Acetic acid and sodium acetate will form acidic buffer solution  Give that…

Q: The equation for the dissolution of calcium hydroxide is Ca(OH)2 (s) → Ca2* (aq) + 20H" (aq) What is…

A: We have to predict the expression of Ksp.

Q: Chemistry How do I calculate the %ionisation at pH of a drug (compound code;UQPC 22-606-Q) the “Q”…

A: percent ionization = [H+]/[unionized form ] ×100

Q: Considering that ferrous hydroxide (Fe(OH)2) has a Kps of 6,3 x 10^-18, what is the pH at which…

A: Given: Concentration of Fe2+ ions, [Fe2+ ] = 0.01 M And Ksp = 6.3 X 10-18

Q: Calculate the solubility of Ca(OH)2(s) (Ksp = 1.6 x 10–15) in an aqueous solution buffered to pH…

A: Since the pH = 8 = 14 + log[OH-] where [OH-] = concentration of OH- ions  => [OH-] = 10-6 M Since…

Q: Percent variance for Kc for Fe3+ + SCN- Fe(SCN)2+ = 110%, the average value for kc = 186 Percent…

A:

Q: At a particular temperature, the solubility of In₂(SO₄)₃ in water is 0.0068 M. You have found Ksp to…

A: Given: The solubility of In₂(SO₄)₃ in water = 0.0068 M The Ksp of In₂(SO₄)₃ = 1.6 × 10⁻⁹ We have to…

Q: The standard state free energy of hydrolysis of phosphocreatine is ΔG° = -42.8 kJ/mol.…

A: Given: Temperature(T) = 200C = 20 + 273K = 293K                       ∆G° = -42.8 kJ/mol…

Q: Hydrogen bromide is oxidated with manganese(IV) oxide in acidic solution producing bromine &…

A: C) 9

Q: Details Using chemical equilibrium definitions and calculations, explain how the assumption that the…

A: This assumption can be explained on the basis of  le chatelier's principle  According to this…

Q: The Ksp value for calcium sulfate [CaSO4] is 2.40 X 10-5 and a professor made 1825 mL of a CaSO4(ag)…

A:

Q: Calculate the solubility (in mol/L) of silver oxalate, Ag2C204, in 0.15M Na2C204. = 1.0 x 10-11 Ksp…

A: Ksp is the product of concentration of each ions and each ions are raised by respective powers.

Q: Consider the titration of 50.00 ml of a solution of 0.2574 M of the fully protonated form of the…

A: Determine the number of moles.   Number of moles of glycine = Molarity (M) × Volume (L)…

Q: A buffer solution containing 0.19 M methylammonium and 0.22 M of the conjugate base, methylamine,…

A: Answer: option c. 10.70 is the pH of the buffer solution

Q: Write the equilibrium constant expression for the formation of thiocyanoiron (III) from iron (III)…

A: The formation reaction of thiocyanoiron (III) is given as, => Fe3+ (aq) + SCN- (aq)…

Q: give the properties of the enzyme (e.g., shape, size, colour, price). a) aluminosilicate b) trypsin

A: In a chemical reaction, the compounds that help to increase the rate of a reaction are called…

Q: Neutralization of phosphate . Given that phosphoricacid (H3PO4) can give up three protons with…

A: Titration curve for H3PO4 versus NaOH

Q: Pls help ASAP.

A:

Q: 5. A mixture of 0.20 Macetic acid and 0.30 Msodium acetate is given. What the pH of the medium if…

A:

Q: What is the ratio of the concentration of acetic acid and acetate ions required to prepare a buffer…

A:

Q: Calculate the pH at which pilocarpine (basic drug) starts to precipitate from a 2% w/v aqueous…

A: Solution- poOH=pKb + logConjugated acidbasegivehn pKa of pilocarpine…

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

A:

Q: The alkalinity of verde river is 250mg CaCo3/L. Calculate the molar concentration of the following…

A: Alkalinity refers to the ability of a solution to react and neutralize the acids in the water.…

Q: Salts containing the phosphate ion are added to municipal water supplies to prevent the corrosion of…

A: The Ka3 value of phosphoric acid can be expressed as follows: H3PO4  ⇔ H+  +  H2PO4-H2PO4-  ⇔  H+  +…

Q: *D. Ksp = [Ag*]² · [SO4 1 %3D Ksp- pwidut/deacte.cauh una bulilor liguel. 2. If the gram solubility…

A:

Q: It is found that up to 0.0110 g of SrF₂ dissolves in 100 mL of aqueous solution at a certain…

A:

Q: 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…

A: Given : a. pH = 7.15 + log [0.25]/[0.50] b. pH = pKa + log [0.33]/[0.11]; (Ka = 6.3096 x 10-8) c.…

Q: I am not understand these problems. Can someone help?

A:

Q: You want to study the oxygen binding ability of hemoglobin at pH 7.4. You decide to use a phosphate…

A: Preparation of phosphate buffer

Q: In which part of the oxalate ion acts as bidentate in complex formation reactions? K2Cr207 + 7H2C204…

A: ligands are the molecules which donates their pair of electrons to form bond with metal ion. There…

Q: Dihydrogen phosphate, H₂PO₄⁻(aq), undergoes the following acid base equilibria in blood: H₂PO₄⁻(aq)…

A: The Henderson-Hasselbalch equation is expressed as, pH=pKa+logA-HA......(1) Where, [A-] is the…

Q: Chitinase is a protein that breaks down chitin, a primary component of the cell wall in fungi,…

A: Given: Chitinase is a type of protein that breaks down the primary component of cell wall in fungi…

Q: Carbonic acid, H2CO3, undergoes the following acid base equilibria: H2CO3,=H*(aq) + HCO;¯(aq) =…

A: The relation between pKa and pH can be known as, ph = pKa + logsaltacid

Q: Fluoride treatment strengthens tooth enamel by converting hydroxyapatite, Ca5(PO4)OH, into…

A: Ca5(PO4)3F(s) ----&gt; 5Ca2+ + 3PO43-  + F-  The solubility product constant,Ksp is the equilibrium…

Q: Calculate AG for the creation of an electrochemical gradient of protons in a mitochondrion, when the…

A: Given that, R=8.314 J/mol.K,      T=298K    , F=96485 C/mol     and pH=7and 8 ∆G=RHTHlnxinxout,Here…

Q: you'd like to weigh out acetic acid and sodium acetate (pka=4.75) to use as buffer system to study…

A: This would simply require the Henderson Hasslebech reaction, which states that when the pKa value of…

Q: Define pKa and provide at least one method for determining its value.

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

Q: Calculate the concentration of the following weak acids. 2) a) ethanoic acid with pH 4.53 (Ka = 1.74…

A:

Q: If the concentration of Sn2+ ions in a solution of Sn(OH)2 was measured to be (1.24x10^-3), what is…

A: Given, concentration of Sn2+  = 1.24 × 10^(-3)...

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.