HX → X- + H+ Ka = 6.61 · 10-5 H2A ty НА- + н+ Ka = 2.68 · 10-7 Calculate the Keg for the following reaction: H2A + X¯ + HÀ¯ +HX Record your answer in scientific notation to 3 sig figs.

Please keep your response simple, and at the high school level so that I can understand your solution. Please do not overcomplicate your solution with University level workarounds.

Which of the following acids cannot be used with ammonia (NH3) as a solvent due to the leveling effect? ethanol acetone OH pKa = 16.0 H pka = 19.2 H acetylene acetic acid pKa = 25 'OH pka = 4.75 -H

Caluclate change H for the reaction 4 NH3 (g) + 5 O2 (g) -> 4 NO (g) + 6 H2O (g).

For each of the following reactions, choose which expression represents Ke. a. TIC13 (8) TICI(s) + Cl₂ (9) [TIC13] [TICI] [C1₂] O Ke OKc = [Cl₂] [TICI] [C1₂] [TIC13] 2- b. CuCl₂² (aq) → Cu²+ (aq) + 4Cl¯ (aq) Ke OKC Ke = Кс Oke Oke = O Kc = = = c. 302 (g) 203 (9) [0₂]³ [03]² [03]² = = [Cu²+ ][CI-14 [CuCl2] [CuCl2-] = [Cu²+ ][CI] [Cu²+ ][CI] [CuCl2] [02] ³ [03] ³ 10.1²

7. Copper(I) chloride salt is added to a solution of pure water to make a saturated solution. Upon dissolving, the concentration of copper(I) ion was found to be 4.15 x 10-4. What is the Ksp of copper (I) chloride? ©2022 F'22/S'23 Chemistry II A: 1.72 x 10-7 131

Consider the reaction below and answer the question below the reaction. A student performed a synthesis of ethyl 4-aminobenzoate (C) as shown in the reaction above. The student added 1.20 g of 4-aminobenzoic acid and 12.0 mL of ethanol together in the presence of sulfuric acid. The reaction mixture was heated to reflux for a period of 45 minutes. H₂N OH 4-aminobenzoic acid MM 137.14 g/m ol A 77.7% 56.1 % 128 % 72.2 % + CH3CH₂OH ethanol MM 46.10 g/mol H+ H₂N OCH₂CH3 + H₂O ethyl 4-aminobenzoate MM 165.19 g/mol C B Let's assume the theoretical yield of the reaction is 7.22 g and the student produced 5.61 g of ethyl 4-aminobenzoate. What is the percent yield of the reaction?

1) Use Hess's Law to determine AH for the following target reaction. 3 CO₂(g) + 4 H₂O(g) b) C3Hg(g) + 5 O₂(g) C(s) + O₂(g) -CO₂(g) 2 H₂(g) + O₂(g) 3 C(s) + 4 H₂(g) →→→ 2 H₂O(g) C3H8(g) AH = AH = ΔΗ ΔΗ = ??? -2043 kJ -393.5 kJ -483.6 kJ

For the reaction of nitrogen and oxygen to form nitrogen dioxide,                                              N2(g) + 2O2(g) ⟷⟷    2NO2(g)              Kc = 1.5×103 If the reaction mixture is found to contain 2.0 M NO2 and 0.10 M N2 and 0.10 M O2, what is the value of Qc and what does this mean? A)Qc = 4×103  B)Rxn will shift to the products C)Qc = 2×102 D)Rxn will shift to the reactants

Which "K" below quantifies the extent of the following reaction? 2H20(1) → H3O* + OH¯ O Kb O Kw O KE O Ksp O Ka