Construct the expression for Kb for the weak base, N2H4. N2H4(aq) + H2O(10) = OH"(aq) + N2H;*(aq) 1 Based on the definition of Kb, drag the tiles to construct the expression for the given base. Kp = 5 RESET CLLO+1 CALL I+1

Determine the Kb for a base by constructing an ICE table and using this information to construct and solve the equilibrium constant expression. Complete Parts 1-2 before submitting your answer. 1 2 NEXT > The pH for a 0.0160 M solution of CH:CH.NH: is 8.600. Fill in the ICE table with the appropriate value for each involved species to determine the unknown concentrations of all reactants and products. CH:CsH&NH:(aq)+ H:O(1) OH-(aq) +CH:CeH&NH;*(aq) Initial (M) |Change (M) Equilibrium (M) 5 RESET 0.0160 8.60 -8.60 0.93 -0.93 2.50 x 109 -2.50 x 109 3.98 x 10 -3.98 х 10° 5.4 -5.4

Calculate the pH at 25 °C of a 0.63 M solution of ethylammonium bromide (C,H,NH,Br). Note that ethylamine (C,H;NH,) is a weak base with a p K, of 3.19. Round your answer to 1 decimal place. pH = ] ?

A chemist hoped to make an ethyl ester using diazoethane. At the end of the reaction, only the original carboxylic acid, ethene, and nitrogen were produced: □ CH H EXP 0+ H₂C OH Suggest an arrow-pushing mechanism that accounts for these products. Draw all missing reactants and/or products in the appropriate boxes by placing atoms on the canvas and connecting them with bonds. Add charges where needed. Electron-flow arrows should start on the electron(s) of an atom or a bond and should end on an atom, bond, or location where a new bond should be created. L CONT. 1 H₂C O NEN: OH ΝΕΝ OH *O* + H₂C=CH₂ + N₂ H с N O S CI Br I

Calculate the concentration of all species in a 0.16 M KF solution. K₁ (HF) = 6.3 × 10-4 Express your answer using two significant figures. Enter your answers numerically separated by commas. [K+], [F¯], [HF], [OH¯], [H3O+] = VE ΑΣΦ ? M

The acid ionization constant, Ka, of a certain weak acid HA equals 1.4 x 10-11. What does Kb for the conjugate base, A- equal? Assume that the temperature equals 25 ˚C.

13 The ionization constant, K₂, for HCN (aq) is 6.9 x 10-10. What is the pH of a 0.14 molar solution of sodium cyanide, which contains the cyanide ion? Report your answer with 2 places past the decimal point. Type your answer...

Construct the expression for Kb for the weak base, CIO". CIO (aq) + H20(1) = OH"(aq) + HCIO(aq) 1 Based on the definition of Kb, drag the tiles to construct the expression for the given base. RESET [H20] [H;O"] [OH] [H;CIO] [HCIO] [CIO] 2[H2O] 2[H;O*] 2[OH] 2[H2CIO] 2[HCIO] 2[CIO] [H;O]? [H;O*? [OH"]? [H2CIOJ? [HCIOJ? [CIO]?

11 4000ol Ho00o 404 F-000HO HOO0HO HOOovale IHO 10H |-000Hal HO00H HO00'HO HO %3D ased on the definition of Ka, drag the tiles to construct the expression for the given acid. 1. CH,COOH(aq) + H,0(1) = H,O*(aq) + CH,COO-(aq) Construct the expression for Ka for the weak acid, CH,COOH. Question 26 of 27

4 Ho doH loaHiz HOZ fo'Htz HO -oʻH lo'H %3D sed on the definition of Kb, drag the tiles to construct the expression for the give 1. CiO-(aq) + H,0(1) = OH-(aq) + HCIO((aq) Construct the expression for Kb for the weak base, CIO-.