At 25 °C, what is the value of Kb for the cyanide anion, CN? Ka(HCN) = 6.2 × 10-10 O 1.6 x 10-4 O 1.6 x 10-5 O 3.8 x 10-5 6.2 x 104 3.8 x 10-4

Q: Which of the following is an acidic salt?* OKNO3 O SrCl2 O CuCl2 Ba(CH3C00)2

A: Acidic salts are the ones which produce acidic solution when dissolved in solvent. Acidic salts are…

Q: 1. The oxalate ion concentration, C;0. of 0.20 M H;C0 is adjusted to a value of 3.00 x 10 M. What is…

A: As per the guideline, since you have asked multiple questions, we have solved the first question for…

Q: A sample of potassium acetate, KCH3CO2 (M=98), of mass 4.9 g is used to prepare 500 ml of solution.…

A: Consider the given information is as follows; Mass of KCH3CO2 = 4.9 g Volume of solution = 500 mL =…

Q: Calculate the pH of a 0.23 M sodium formate solution (HCOONA). Kp for HCOO = 5.9 x 10-11

A: Given that,    Concentration of HCOONa solution = 0.23 M   Kb for HCOO-  = 5.9×10-11  Since, pKb =…

Q: 1. Which of the ff. is NOT true for K? It is dimensionless. b. It is independent on temperature. c.…

A: An Equilibrium reaction is a reaction in which the rate of the forward reaction is equal to the rate…

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…

A:

Q: Arrange the following species as most stable in solution to least stable in solution using the K of…

A:

Q: Boron trifluoride (BF3) has no dipole moment. Explain how this observation confirms the geometry of…

A: a) The boron and fluorine are the atoms with different electronegativity and there are three…

Q: Calculate the % CO2 for the following compounds: Na2CO3, KHCO3, K2CO3, NaHCO3

A: For sodium carbonate:

Q: A 0.432 M solution of pyridine has a pH of 9.40. What is the K, of pyridine? Oa. 2.7 × 104 Ob. 1.5 x…

A:

Q: Calculate the pH of a 0.30 M solution of NH 4Cl (Kb for NH 3 = 1.8 x 10 -5). a. 11.67 b.…

A: NH4Cl is the salt weak base NH4OH and a strong acid HCl therefore hydrolysis constant Kh will be…

Q: Calculate the acid ionization constant (pKa) for the acid with a 0.775 M solution of a weak acid…

A: Given data of the following:: [weak acid] = 0.775 M = [HA]  pH = 3.38 pka = ?

Q: 13. The pka of an acid is 2.35. What is the acid-dissociation constant of the acid? O 4.5 x 10- O…

A: We can solve the Given problem by recalling the following equation Pka = -logka Where ka =…

Q: Calculate the value of Kc for a solution of 0.05 M HN3, if the equilibrium concentration of N3-=…

A: Given data Initial conc. of HN3 = 0.05 Mequilibrium concentration of N3-=5.0×10-6 M We know that…

Q: For H2CO3, Kal = 4.3 x 10- and K = 4.8 x 10-11. %3D What is [CO3] closest to in a 0.10 M H,CO3…

A:

Q: What is the concentration (M, mole/L) of Al3+ in water with 6.0 × 10-4 M OH- if the water is in…

A: Al(OH)3⇒Al3++3OH-Ksp=[Al3+][OH-]3 Given [OH-]=6×10-4M We are water is in equilibrium with…

Q: The hydronium ion concentration of 0.120 M nitrous acid solution (Ka for nitrous acid = 7.1 x 10-4)…

A:

Q: What is the pH of 1.10 M CrCl3 (K = 1.00x10-4)? %3D

A: Given, Concentration of CrCl3 (C) = 1.10 M Ka = 1.00 × 10-4 pH of the solution = ? Note: pKw = 14…

Q: Given that K(eq) = K(sp), calculate concentration of the aqueous cation formed at equilibrium when…

A: The details solution for this is provided below in attach image.

Q: Calculate the pH of a 0.025 M solution of propanoic acid (K, = 1.3 x 10-5). 7.48 0.025 O 5.6 x 104…

A:

Q: The acid-dissociation constant at 25.0 °C for hypochlorous acid (HC10) is 3.0 - 10-8. At…

A: Dear student this question is related to equilibrium concept.

Q: Identify the Lewis acid in the following reaction. FeBr3 Br2 FeBr4 Br I3D II IV

A: Lewis acid is the species,  that accepts electron pair. And form ionic species.

Q: Calculate the pH of a 0.299 M NH, solution. NH, has a Kp = 1.8 × 10-5. pH =

A: pH =11.366

Q: Using the reaction below... 2SO3(g)⇄2SO2(g)+O2(g).   Keq​=0.230 calculate the equilibrium constant…

A: When an equilibrium reaction is multiplied or divided by some number, the equilibrium constant…

Q: Which one of the following aqua-ion would you expect to have the lowest pka? a. [Rh(OH2)6]³+ O b.…

A: If  ions of the same charge, it seems reasonable that the smaller the volume this charge is packed…

Q: Calculate the Ka of a 0.390 M acid solution with [H3O+]= 4.52 x 10-5M

A:

Q: What is the pH of a 0.280 M solution of aniline (C6H;NH2, Kb = 4.3 × 10-1º)? %3D

A:

Q: What is Ka for the conjugate acid of CH,NH, (Kb = 4.4 x 10-4)? %3D

A: Given, Ka for the conjugate acid of CH3NH2 = ? Kb = 4.4 × 10-4 Note: The relationship between Ka and…

Q: Calculate the pH of 0.045 C5H5N (Pyridine) K_b= 1.7 x 10^-9 for C5H5N

A: We will ionize pyridine , then draw ICE table to calculate pH of solution.

Q: What is the pH of a solution that is 0.03M in picric acid and 0.1M in sodium picrate. pka=0.38 O a.…

A: The solution is mixed by adding picric acid to sodium picrate. Sodium picrate is made by adding…

Q: What is the pH of a solution that is 0.048 M in HA and also 0.042 M in NaA? (Ka = 4.1 x 10-6) 6.82…

A: Given, Ka for NaA = 4.1 x 10-6  PH = ?

Q: What is the pH of a 0.660 M solution of C3H;NHB (Kb of C5H5N is 1.7 x 10-9)?

A: Given information, [C5H5NHBr] = 0.660 M Kb of C5H5N = 1.7*10-9 Calculate: pH = ?

Q: Explain why-(i) Anhydrous calcium chloride is used in desiccators(ii) If bottle full of concentrated…

A: i) Anhydrous calcium chloride CaCl2 is highly hygroscopic in nature it readily absorbs moisture.…

Q: Material from chapter 12, 15 2 NO2 (g) N2O4 (g) a. Is this endothermic or exothermic? AH = -57.23…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: Using the Kb for NH3 (from Appendix G: Kb = 1.8 x 10-5), calculate the Ka for the NH4* ion. O 5.6 x…

A: Conjugate acid base pair :-  A pair of acid and base which differs by a proton is called conjugate…

Q: What is the percent ionization at 25 °C for a 0.00675M solution of codeine (CH2,NO)? O 18.7% O 1.54%…

A: Codeine is a weak base , to calculate its percent ionization we would first calculate draw an ICE…

Q: What is the pH of a 0.64 M solution of NH3 (Kb = 1.2 × 10-5)?

A:

Q: What is the pH of a 0.1055 M CH3COOH solution (K, = 1.75 x 10-5)? %3D

A: Answer: ICE table for the dissociation of weak monoprotic acid is shown below:

Q: What is the concentration of C2O4-2 in a 0.370 M oxalic acid H2C2O4 solution? For oxalic acid, Ka1=…

A: First of all dissociation reactions taken into consideration as follows:

Q: What is the pH of a 0.0770 M solution of hydrocyanic acid, HCN (Ka = 4.9 x 10-10)? 1 3 4 C 7 8 9 +/-…

A: PH = -log[H+] [H+] = 0.0770M

Q: At equilibrium, what is the value of AG7XN? O = 1 O <0 O = 0 O <1

A: Equilibrium means there will be no change in any physical properties. So , accordingly Gibbs free…

Q: The acid ionization constant for Sc(H2O)63+ (aq) is 5.0×10-5 . Calculate the pH of a 0.0043 M…

A: Given , acid ionisation constant , Ka= 5.0×10-5 concentration of the Sc(NO3)3= 0.0043 M

Q: 4.4 Calculate the equilibrium concentration of H,O* in a 0.10 M solution of butanoic acid (K = 1.86…

A: We will first construct ICE table, then calculate the concentration of H3O+ . Then find pH.

Q: What is the molar concenuration of hydronium [H,O*] ions in a solution prepared at 25°C with a pH of…

A: The acidic or basic nature of a solution is determined by its pH value. pH measures the…

Q: Ex 2) Acids and Bases: A solution is obtained by completely dissolving 900 g of sodium hypochlorite…

A: Answer:- This question is answered by using the simple concept of calculation of pH of solution…

Q: What is the pH of a 2.5 M solution of the weak base ephedrine (Kb = 1.4 × 10-4)? O a. 13.30 b. 11.72…

A:

Q: What is the pH of a 0.35 M solution of methylamine (CH3NH2, Kb 4.4 at 25°C? O a. 5.55 b. 12.09 O c.…

A: We will. Calculate pH

Q: Heroin, a derivative of morphine, is a powerful analgesic and a powerful narcotic agent. Calculate K…

A:

Q: The table below shows the structural formulas and corresponding K, values of four different…

A: Chlorine is an electron withdrawing group , it withdraws the electron towards itself .thus it…