3. What are the identities of the six unknown solutions? You will need to apply logic in order to answer this question. Start by identifying the one reaction (or cell) that is different from all of the others. From that one reaction you should be able to piece together the puzzle. Assigned unknown letter (1) (2) (3) (4) (5) (6)

Calculate AH for the reaction ClF(g) + F2(g) -----> CIF3(G) from the following data: 2CIF(g) + O2(g) > Cl½0(g) + F2O(g) 2CIF3(g) + 202(g) -----> Cl½O(g) + 3F20(g) 2F2(g) + O2(g) -----> 2F2O(g) AH = 167.4 KJ --- -- AH = 341.4 KJ AH = -43.4 KJ

For which of the following reactions is AHn equal to AH; of the product(s)?You do not need to look up any values to answer this question. Check all that apply. > View Available Hint(s) O Na(s) + F2 (1)→NAF(s) O Na(s) + F2 (g)→NAF(s) C(s, graphite) + 0,(g) →CO,(g) 2Na(s) + F2 (g)→2NAF(s) CACO3 (g)→Ca0 + CO2 (g) O CO(g) + O2(g)→CO2(g)

hát is the équilibrium constant for the following reaction

3.  Solving time of electrolytic process. How long will it take for 1.25 L of a 1.0 M CuSO4 solution being electrolyzed with a current of 3.40 A to reach a concentration of 0.25 M?

acid. b- 6. Consider the reaction below: (a). Highlight (or circle) the bonds that are broken/changed. (b). Identify the reaction type. (c). Explain why this makes Vitamin Ca good antioxidant. HO но Но—с-н Но-с-н ČH,OH ČH;OH !!! I 8 | 6 | OL

Suppose a pair of chemical compounds A andB can react in two different ways: A+BC Reaction 1 gives product C. A+BD Reaction 2 gives product D. The following facts are known about the two reactions: • Reaction 1 is endothermic and Reaction 2 is exothermic. • If a reaction vessel is charged (illed") with A and B, then at first Cis produced faster than D. Use these facts to sketch a qualitative reaction energy diagram for both reactions. Note: because these sketches are only qualitative, the energies don't have to be exact. They only have to have the right relationship to each other. For example, if one energy is less than another, that fact should be clear in your sketch. Reaction 1 Reaction 2 energy energy reaction coordinate reaction coordinate

R = 8.314 mol-K F = 96,485 mol AG = AG° + RT · In(Q) ΔΕ - (E) · In(Q) ΔΕ. Half Reaction (Note: All given as reduction) E° (V) 02 (g) + 4 H*(aq) + 4 e 2 H20 (1) 1.229 Z2 (s) + 2 e 3+ (aq) + 3 e 2z (aq) 0.426 A (s) 0.292 2 H20 (1) + 2 e G2+ (aq) + 2 e M²+ (aq) + 2 e¯ H2 (g) + 2 OH¯ (aq) - 0.828 G (s) - 1.245 M (s) - 1.893 A student constructs a voltaic electrochemical cell with two metal electrodes [metal G and metal A] in their respective aqueous nitrate solutions [G(NO3)2 and A(NO3)3]. Use this information, as well as the reduction potentials in the table above to complete each statement below. Consider the same cell from the above prompt. Calculate A E°. cell for this galvanic cell given the reference information given at the top of the quiz. Report your answer with 3 decimal places. You do not need to report units with your answer.

5. One of the key steps in the tricarboxylic acid (TCA) cycle is the hydration of fumarate to malate: Fumarate-² + H₂O = Malate-2 The standard reaction Gibbs free energy and enthalpy for this reactions are -880 cal/mol and 3560 cal/mol, respectively. (a) What is the equilibrium constant for this reaction (25 °C)? (b) Is the reaction favorable (spontaneous) at 25 °C? (c) What is the equilibrium constant of this reaction under physiological conditions (37 °C)? (d) Is this reaction favorable at 37 °C?

If the equilibrium constant of a given reaction is 6.25, what is the equilibrium constant of its reverse reaction?