Question

± The Nernst Equation and pH Suffuric acid is a very strong adid that can act as an oxidizing agent at high concentrations (very low phl. or even negalive pll values), Under standard conditions, sulfturic acid has a low reductor potential, so (aq)4H (a)+2e SO2(g)+2H,0), +0.20 V which means it cannot axidize any of the halides F2. Cl2, Bra. or I,if the Ht ion concentration is increased, however, the driving force for the sulfuric acid reduction is also increased accordn to Le Cháteller's principle. Sultfuric acid cannot oxidize the fuoride or chloride anions, but it can axidize bromide and iodide anions when there are enough H ions present. The standard reductior potentials of the halogens are as follows F2 + 2e CI, + 2e- Br2 + 2e- 12+2e- → → → → 2F", 2CI-, 2Br-. 21-, +2.87V +1.36 V +1.07 V +0.51 V The Nemst equation allows us to delermine what nonstandard conditions allow the reaction to occur (have a positive E value). The Nemst oquaion relates a nonstandard poterdal, E,b the standard potential E" , and the reactn qotiert. Q. by where R = 8.314 J (mol K). T is the Kelve temperate ns the number of moles of electrons transfer edin the readion, and F 96.48S C/mol e Part A AS90 Cwhat is the maximum value of the reaction quotient, Q.needed to produce a non-negative E value for the reaction O (a)+4H (ag)+ 2Br (aq) Bra(ag) + SO2(8) +2H,O) lnother words, what is Q when E = 0atthis terpersh.ae? Express your answer numerically to two significant figures Submit y Answers Giv p

Answer 1