What is the percent ionization of a 1.0 M solution of hydrazine, N2H4? N₂ H4 Kb = 9.5 x 10-7 [?] % % Ionization Enter

Which correctly identifies all the acids and bases in the reaction? CO32- + HF + HCO3¯ + F O HF and F are the acids; HCO3¯ and CO32 are the bases O HF and HCO3- are the acids; F and CO32- are the bases Co32- and HF are the acids; HCO3 and F are the bases HF is the acid; CO,2· is the base O HCO3 is the acid; CO32 is the base

Info on phosphoric acid is: pKa1= 2.16 pKa2= 7.21 pKa3=12.32

Which of the following salta la most soluble? AKOH)3-Kgp = 19 109 BigS3-Kap = 16*1020 A22CO్; - Kgo = 6.1• 1012 AgCl-K n = 1.8*10-10

(a) If the molar solubility of Cd3(AsO4)2 at 25 oC is 1.15e-07 mol/L, what is the Ksp at this temperature?Ksp =  __________(b) It is found that 8.90e-06 g of Y2(CO3)3 dissolves per 100 mL of aqueous solution at 25 oC. Calculate the solubility-product constant for Y2(CO3)3.Ksp =  _______(c) The Ksp of ScF3 at 25 oC is 5.81e-24. What is the molar solubility of ScF3? solubility =  ________mol/L

3. Given: 1.000 mL N2OH E 0.0302 g H2C2O4 .2H20 ; 1.000 mL HCI E 0.1123 g BaCO3. What is the value of each mL of the HCl in terms of mL of NaOH ?

The hydroxide ion concentration, [OH-], of an aqueous solution of 0.324 M hydroxylamine (a weak base with the = 9.1 × 10-⁹, is: -9 formula NH₂ OH), Kb: = M [OH¯] = =

OH H₂O (excess) H+

Ibuprofen (also known as Brufen) is an analgesic (pain killer) and anti-inflammatory drug. It is a weak carboxylic acid (Chemical Formula: C12H17C00H; K = 1.2 x 10-5). A Medical student from Lusaka Apex Medical University (LAMU) prepared a 0.4 M solution of Brufen to give to an accident victim with minor injuries but in a lot of pain. on i. Write a reaction equation showing how Brufen ionizes in water. ii. Write the acid ionization constant expression for Brufen iii. Calculate the percent ionization of Brufen in water Select one: O A C12H17COOH(ag) + H2OM → C12H17CO0'(aq) + H3O*(aq)} K = [C;;H1¬CO0"][H30*]. [C1,H17COOH][H=0] 0.55% %3D OB. + C12COO(ag) + H3O*(aq); K= [C1;;H17C00"][H,o*j. [C2H17COOH] C12COOH(a) + H2O¶ 0.55% C12COOH(ag) + H2O) → C12COO (aq) + H30*(aq), K = [C1;H3;C00"][H30*]. [C,2H17COOH][H=0] 0.0022 %3D [CH1,CO0"][H30*]. [C1H17COOH] Go O D. C12H17COOH + H2O C12H17CO0* + H3O*|K = 0.55% %3D

HCI could be om a 5,00mL HICI, 3. Calculate the molarity of the H3PO4 solution prepared as follows: 5.00 mL of 10.0 M phosphoric acid is diluted to 250 mL in a volumetric flask; next 25,00 mL of this solution is diluted to 500 mL in a volumetric flask, ofamlfari 16 m nYoroxide solution