2. At equilibrium, the value of [H,O"] in a 0.200 M solution of an unknown acid is 2.00x10 M. Determine the degree of ionization and the K, of this acid. HA(aq) + H,O(1) H,O (aq) + A-(aq)

Q: An unknown weak base (B) undergoes reversible dissociation in water according to the following…

A:

Q: Determine the pOH of a .10M aqueous solution of KF. For hydroflouric acid, Ka = 7.0x10^-4 A. 1 B.…

A: The given data contains, Concentration of KF = 0.10 M.

Q: 19. Consider the K, values for the following acids: Cyanic acid, HOCN, 3.5 x 10 Formic acid, HCHO2,…

A: Here multiple choice question is given.

Q: At equilibrium, the value of [H+] in a 0.260M  solution of an unknown acid is 0.00418M . Determine…

A: For acid HA, the acid dissociation constant Ka can be written as:

Q: | Find the equilbrium expression (Ka) for the ionization reaction. HCO3 (aq) + H20(1) SH30*(aq) +…

A:

Q: Identify the correct equation for the equilibrium constant K, for the weak acid dissociation of…

A: Equilibrium constant expression is the ratio of the product of concentration of each reactant raised…

Q: Complete the acid-base reaction below: HCIO(aq) + HS (aq) = The Ba vaiue for HCIO is 3.0 x 10 and…

A: The value for Ka for HS- is calculated as shown below where Kw is the ionic product of the water.…

Q: The equilibrium expression for any weak acid can be written as HA (aq) + H2O (1) = A- (aq) + H3O+…

A: The equilibrium constant of a chemical reaction  at equilibrium is defined as the ratio of the…

Q: 10. A 0.045 M solution of hypobromous acid (HBrO) has a pH of 5.02. Calculate the K, for hypobromous…

A: According to the question, the balanced chemical reaction is: HBrO(aq) + H2O(l)   ---->  H3O+(aq)…

Q: 5. At 25°C, the K, for a certain monoprotic acid HA is 6.2x10 10, What will be the K, value for the…

A:

Q: The pH of a 0.551 M solution of sodium methanoate, HCOO°Nª*, is 8.75. Calculate K, for the…

A: Concentration of HCOO-Na+ = 0.551 M pH of the solution = 8.75

Q: For the reaction: H,PO4 + OH -> HPO,* +H,O, Which species is(are) the 2- Brønsted-Lowry base(s)? A)…

A: Interpretation-  To tell about which species are bronsted lewis base in the reaction which is given…

Q: Calculate the acid dissociation constant, Ka, for hydrogen cyanide, HCN, based on the given…

A: Relationship between Gibbs free energy change and Eocell is: ∆Go=−nFEocell…

Q: Which direction does the equilibrium below favor and what is the deciding factor? H+ cat. H20 HO, НО

A: The correct option is as follows:

Q: Muscles produce lactic acid, CH, CH(OH)COOH(aq), during exercise. Calculate the percent ionization…

A:

Q: 17. The ionization constant, Ka, for weak acid, HA, is 4.94 × 10–8.  What is the pH of a 0.7582 M…

A: A weak acid ionizes slightly in an aqueous solution.  Weak acids also ionize to yield the H + ion…

Q: 8) What is the pH of a solution containing 0.280 M weak base, B', with a K, of 3.9 X 10?? (10.51) в…

A: This question can be solved using ICE approach.

Q: Write balanced equations for proton-transfer reactions between the listed pairs. Indicate the…

A: The proton transfer phenomenon is considered for the formation of acids. Shifting of the equilibrium…

Q: A 0.080 M solution of HX is 4.2% ionized. Calculate K, of this acid. O 3.5 x 104 O 1.4x 10-4 O 3.5x…

A:

Q: Ascorbic acid (H,C,H,0,) is a diprotic acid. The acid dissocation constants for H,C, H,0, are K- K00…

A:

Q: Calculate the H,O" concentration in a solution of acetic acid if the concentration of molecular…

A: If we assume the concentration of H3O+  and CH3COO- ions is x then -   CH3COOH H3O+ CH3COO- I…

Q: Boric acid, BOH is used as a mild antiseptic. What is the pH of a 0.025 aqueous solution of boric…

A:

Q: Calculate the pOH of a 0.20 M solution of pyridine, C5H5N. The Kb value for C5H5N is 1.7 x 10-⁹. O…

A: we have to calculate the pOH of 0.20 M pyridine

Q: How to calculate the value of the equilibrium constant for the weak acid, CH3COOH?   NaOH =…

A: Molarity of NaOH = 0.3060 M Volume of NaOH = 20.40 mL Molarity of CH3COOH = 0.2496 M Volume of…

Q: Consider the Pourbaix digram below, at E = +0.4 V, when pH is adjusted from 4 to 8, which species of…

A: According to graph Fe(OH) 3 (s is between ph range 4 to 8 .

Q: 2. Suppose a 0.0500M solution of HNO, was created Write the dissociation reaction for this compound.…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: What is the pH of 0.03 M acid solution? The K, of the acid is 5x10-3? А. 1.5 В. 1.9 С. 2.0 D. 2.3

A:

Q: The ionization constant, Ka, for weak acid, HA, is 4.94 × 10–8.  What is the pH of a 0.7582 M…

A: weak acids are those acids which are not completely dissociate its ions into solution.

Q: The [H,O'] is 3.39 × 10“M for an unknown acid HA. Write the expression for K, for this acid based on…

A:

Q: The ionization constant, Kb, for weak base, B, is 5.47 x 10-8. What is the pH of a 0.9543 M solution…

A: Given, B(aq) + H2O(l) = BH+(aq) + OH-(aq) B is a weak base. Kb for B = 5.47 x 10-8 Concentration of…

Q: Water (H,O) acts as a Brønsted-Lowry base in which of the fallowing equilibrium reactions? HCO, +…

A: According to Bronsted-Lowry theory,  acids are the species which donate protons and bases are the…

Q: What is the approximate K for the following acid/base reaction? H25 (aq) + F(aq) ++ HF (aq) + HS…

A: According to  soft -hard acid base constant,reaction will fovour at the detection where hard acid…

Q: At equilibrium, the value of [H+] in a 0.260M  solution of an unknown acid is 0.00405M . Determine…

A: Given: Equilibrium concentration of H+ ion = 0.00405 M Initial concentration of acid = 0.260 M

Q: 8. What is the pH of a 0.20 M solution of sodium acetate? The K, for acetic acid is 1.8 x 10-5 ?

A:

Q: The ionization constant of a very weak acid, HA, is 1.9×109. Calculate the equilibrium…

A:

Q: Determine if the following salt is neutral, acidic or basic. If acidic or basic, write the…

A:

Q: Boric acid, BOH is used as a mild antiseptic. What is the pH of a 0.025 aqueous solution of boric…

A: Step 1                            B(OH)3 + H2O ⇌ BOH 4- + H+At t = 0                 CAt Equilibrium…

Q: 161P.) The ionization constant of a very weak acid, HA, is 1.5×10-9. Calculate the equilibrium…

A:

Q: Which direction does the equilibrium below favor and what is the deciding factor? H+ cat. H20 ОН HO

A:

Q: Boric acid, BOH is used as a mild antiseptic. What is the pH of a 0.025 aqueous solution of boric…

A: BOH3+H2O⇌BOH4-+H+At t = 0     CAt Equilibruim  C-C∝             C∝                   C∝…

Q: At 25°C, the K, for a certain monoprotic acid HA is 6.2x10-10, what will be the K, value for the…

A: Here we are required to find the dissociation constant for the weak monoprotic acid HA

Q: Imagine that 500 mL of a 0.100 M solution of HOAc(aq) is prepared.  What will be the [OAc–] at…

A:

Q: The pH for 6.1 × 10-4 M solution of cocaine, a weak base, is 9.60. Determine the value of Kb for…

A:

Q: Which of the following equations represents the acid equilibrium associated with Ka, for H3PO3?…

A: The explanation is given below-

Q: Ammonia, NH3, is a base and will readily accept a proton in accordance with the following reaction:…

A: The given equilibrium reaction is as follows: NH3(aq) + H2O↔ NH4+ + OH- The equilibrium constant for…

Q: 8. What is the pH of a 0.20M solution of sodium acetate? The K, for acetic acid is 1.8 x 10-5 ?

A:

Q: Boric acid, BOH is used as a mild antiseptic. What is the pH of a 0.025 aqueous solution of boric…

A:

Q: The pH for 0.0850 M solution of C,H,CH,COOH is 2.68. Determine the value of Ka for C H̟CH,COOH. 1 2…

A:

Q: Calculate K, and pK, for water. H₂O acid (HA) + H₂O solvent H₂O+ + OH conjugate base (A)

A:

UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or  ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.