Consider the following spontaneous reaction 3X 2 (g) → 2X 3 (g). What are the sign of AH, AS and AG for the reaction? * +ve, +ve, +ve O +ve, -ve, -ve O -ve, +ve, -ve -ve, -ve, -ve
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- Dehalogenase enzymes catalyze the clevage of C-X bonds. One such dehalogenase catalyzes the following reaction. An active site aspartate is thought to carry out the initial nucleophilic attack that expels the chloride. Select the most likely intermediate in the reaction. (Note the stereochemistry. Refer to P11.19 in the textbook if needed.) O O A C D OE -CH₂ H H₂C™ CO₂ H B CO₂ CI N H₂O Cr CO₂ H CO₂ нотум CH3 D CO₂ five N E CH₂Balance each of the following redox reactions occurring in acidic solution. |-(aq)+NO-2(aq)→12(s)+NO(g)l-(aq)+NO2- (aq)→12(s)+NO(g) Express your answer as a chemical equation. Identify all of the phases in your answer. ClO-4(aq)+Cl-(aq)→CIO-3(aq)+CI2(g)CIO4- (aq)+Cl-(aq)→Cİ03-(aq)+Cl2(g) Express your answer as a chemical equation. Identify all of the phases in your answer. NO-3(aq)+Sn2+(aq)→Sn4+(aq)+NO(g)NO3- (aq)+Sn2+(aq)→Sn4+(aq)+NO(g) Express your answer as a chemical equation. Identify all of the phases in your answer.НО b) HO 1) Name each listed compound (a, b, c, d) below, 2) Arrange them in a right reaction order for corresponded conjugation, and 3) List all involved enzyme(s) in each step. OH НО- OH COOH o-t=o OH Н н OH HN H ОН H H OH HN Н OH c) НО d) HO HO HO OH COOH OH O₂PO OH XR
- For the reaction E + S ES, what is the [E] if [S] = 0.18 mM, [ES] = 133 uM, and the Kd = 15 uM? 11,000 UM 20 uM 11 uM O 180 UMwhat is the conjugate acid for the following reaction? HC2HO4 + H2O <--> H3O+ + C2HO4- A)C2HO4- B) HC2HO4 C)H2O D) H3O+Draw the products formed when -D-idose is treated with C6H5NHNH2 (excess), H+
- Titration of alanine by a strong base, for example NaOH, reveals two pk's. Which is the titration reaction occurring at pK1 (pK1 = %3D 2.34)? O-NH2 + COH →-NH + H2O O-COOH + OH →-CO + H20 -COOH + -NH2 → -COO" + -NH2+ -CoO +-NH2* → -COOH +-NH2 O -NH3* + OH →-NH2 + H2OWhen the following equation of a redox reaction in acidic solution is properly balanced, what are the coefficients for Cr2O72–, Fe2+ H+, Cr3+, Fe3+, and H2O, respectively? __Cr2O72– + __Fe2+ + __H+ --> __Cr3+ + __Fe3+ + __H2O (A) 1, 3, 14, 2, 3, 7; (B) 1, 6, 14, 2, 6, 7; (C) 2, 10, 14, 2, 10, 7; (D) 2, 12, 28, 4, 12, 14Cytochrome c oxidase catalyses the transfer of electrons from ferrocytochrome c to molecular oxygen. The balanced equation is shown below. 4 Cytochrome c(Fe 2") + O2 + 4 H* → 4 Cytochrome c(Fe * ) +2H:0 The relevant half reactions are: Cytochrome c(Fe * ) + e Cytochrome c(Fe ) E, = +0.254V ½ O2 + 2 H* + 2 e H20 E.' = +0.816V (F = Faraday's constant = 96.485 kJ /V. mol, R= 8.314 J/mol.K) (i) What is the standard free energy change for this reaction? (ii) What is the equilibrium constant (Keg) for this reaction?
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