The dissociation constant (Ka) of a weak acid is 1.8 x 10, calculate the pKa of the this weak acid. 0 474 0 474 O 235 O 235

Q: Periodic acid, HIO4, is an important oxidizing agent and a moderately strong acid. In a 0.10 M…

A:

Q: The following solutions were prepared: Solution A: 0.01 mole of perchloric acid (HClO4) dissolved…

A: Given- Moles of HClO4 = 0.01 Volume of water = 1L Moles of ethylamine hydrochloride = 0.01  Volume…

Q: sodium hypochlorite (NaOCl) was dissolved in a solution buffered to pH = 6.20 . find the ratio…

A:

Q: What is the pH of a 0.35 M solution of hydrofluoric acid with a Ka of 6.6 x 10-4? О 3.23 O 5.47 O…

A: Given: Concentration of HF = 0.35 M Ka of HF = 6.6x10-4

Q: Determine the pH of a 0.20 M solution of RbNO2 at 25 °C. Kb for RbOH = 2.5 x 10¹ Ka for HNO₂ = 7.2 x…

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Q: Distinguish between physical and chemical properties and changes (§1.1) (SPs 1.1, 1.2) (EPs 1.1,…

A: Matter is anything that occupies space and volume. Matter is made up of atoms. Matter has many…

Q: A buffer system is set up with [HA] = 2[A–]. If pKa = 5.5, what is the pH of the buffer?

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Q: What is the pH of a 0.15 M solution of sodium nitrite?  The pKa of nitrous acid is 3.15.

A: Consider the given information is as follows; Concentration of sodium nitrite = 0.15 M    pKa of…

Q: What molar ratio of H,PO, to H, PO, in solution would produce a pH of 7.07 Phosphoric acid (H»PO,),…

A: Henderson-Hasselbalch equation Equation, which is used to calculate the pH of a solution is called…

Q: What is the pH of a 0.173 M solution of a hydrogen sulfide? The pKa at the temperature of the…

A:

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: when nh4+ (pka=9.2) was used, the reaction did not proceed and no product was formed. given that the…

A: Aromatic compounds show nitration (NO2 addition) when treated with HNO3 and H2SO4 at a suitable…

Q: tricyanidobis(ethylenediamine)nitrosylferrate(II)

A: Given a formula name and asked its formula structure.

Q: Which of the following will form the most stable complex with Pt2+ cation * O 2-2 Bipyridine…

A: The Pt will form the most stable complex with that ligand which is chelate ligands. Chelate ligands…

Q: Phosphoric (H,PO4) is a triprotic acid with pKa values of 2.12, 7.21, and 12.32. It is solution for…

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Q: The pka values of HF, HCI, HBr and HI are 3.2, -7.0, -9.5 and -10.0, respectively. HF is the…

A: The pKa value is negative logarithm value of Ka. Hence lesser value means stronger the acid.…

Q: What is the pH of a solution containing 0.327 mol L-1 of HCl and 1.041 mol L-1 of a weak acid with…

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Q: Which acid is the best choice to create a buffer with pH=7.38? %3D nitrous acid (HNO2), pKa = 3.34 O…

A: to choose the best buffer, pick out that weak acid whose pKa is close to the pH of the buffer.

Q: An enzyme binding equilibrium has a Ka = 50 mM. What concentration of ligand (in mM) is required in…

A: In the given question we have to calculate the concentration of ligand which is required to bind 10%…

Q: Which is more acidic? Is the most dangerous acid the strongest acid? Include a comparison of pH and…

A: Acidic character of a compound can be explained from the values of equilibrium constant. If the…

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

A: Titration curve for H3PO4 versus NaOH

Q: 4. Identify X in the reactions below a) 23°Pu + 15n → 254FM + X X= b) 23®U (Y, 7e) 253ES Y =

A: Balancing of a nuclear reaction: In a nuclear reaction, the total mass and charge of the reactants…

Q: calculate molar concentration of nitrous acid, concentration of nitrite in which is equal to…

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Q: The ionization energy of potassium is 4.34 eV and the electron affinity of Br is 3.36 eV. What is…

A: Ionization energy: K ------> K+ + e-    E1 = 4.34V Electron affinity: Br + e- ---------> Br-…

Q: 2) Which direction will the equilibrium lie for the following reaction? HO, NaOH ONa + H20 pKa =…

A: Since in the above reaction, there is a carboxylic acid and a base NaOH And they are reacting to…

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: Given the following values of equilibrium constants: Cu(OH)2(s) → Cu2*(aq) + 20H¯(aq) - Ksp 1.63 x…

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Q: 2. For pH values of 2.00, 6.00, and 10.00, calculate the alpha values for each species in an aqueous…

A: The relative equilibrium concentrations in terms of α value for triprotic acid, phosphoric acid are…

Q: How much is the pKa for ammonium in 21.9 degree celsius?

A: The pka for ammonium in 21.9 degree celsius is 9.3.

Q: Hydrogen thiosulfite, HS2O2-, is a weak acid with pka= 6.97. A.) There are two sulfur atoms in…

A: A) On the basis of electronegativity difference, oxidation state of S1 is 0(zero) and oxidation…

Q: The number of reactive specie formed when potassium iodate was reduced to potassium iodide A. 1 B. 2…

A: Number of products formed will be equivalent to number of reactive species produced on reduction of…

Q: Calculate the number of grams of solid Mg(OH)2 (58.3 g/mol) that will dissolve in 650 mL of water.…

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Q: Find the pH of a 0.381 M aqueous solution of hypobromous acid (HOBr), for which Ka = 2.1 * 10-⁹.…

A:

Q: Phosphate is a tribasic ion with pKa values of 2.14, 6.86, and 12.4. Write the formula for the…

A: Given: pKa values of phosphoric acid are 2.14, 6.86, and 12.4. And the pH of the solution = 7.6

Q: What term most accurately describes the process below? Br + HBr (A hydrogen abstraction B halogen…

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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: Although KOH, RÜOH, and CSOH have little association between metal and hydroxide in aqueous…

A: To calculate the fraction of lithium in the form LiOH(aq) at equilibrium in 1.00 F LiOH solution.

Q: Determine the pH of a 10-3 mol/L solution of (a) hydrogen sulfate ion (pKa = 1.99), (b) formic acid…

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Q: Explain the possible final products for the following chemical reactions. I. + AICI3 1. 2. KMNO4

A: In the given reacrion, first of Friedel Crafts Alkylation takes place using haloalkane in presence…

Q: If the concentration of phosphate ions ([PO43–]) in a saturated solution of Ca3(PO4)2 is known,…

A: The dissociation of Ca3(PO4)2 (s) is as shown below:

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

A: "Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 14. Acetylide ion formation requires a strong base like NaNH2 which in turn is made using ammonia…

A: Acetylide ion is formed when acetylene reacts with a strong base like NaNH2 dipped in Na/liq. NH3.…

Q: 38. Determine the pH of 0.42 M for formic acid, HCOOH solution. The value of pka for HCOOH is 3.75.…

A: We have to calculate the pH of Solution.

Q: The pKa of HClO2 is 7.6. Calculate the pH of a 0.50 M solution of HClO2

A: we need to find out the pH of 0.50 M of HClO2 solution. HClO2 + H2O → ClO2- + H3O+

Q: Pb(OH)2 (s) is amphoteric and forms the complex ion Pb(OH)42−(aq) with excess OH− (aq) in solution.…

A: Balanced reaction is givrn below

Q: Although KOH, RBOH, and CsOH have little association between metal and hydroxide in aqueous…

A: To calculate the fraction of lithium in the form LiOH(aq) at equilibrium in 1.00 F LiOH solution.

Q: The amino acid serine has two pKa values, one for its carbonyl group (pKa = 2.21) and one for its…

A:

Q: Choose all of the following that can not function as a chelating agent. O C204 O NH2CH2CH2NH2 O F O…

A: Cheating ligand is a ligand which have 2 or more than 2 donor sites through which it attach to a…

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.