Given the following standard reduction potentials, determine the Ksp for FeS(s)

Question

Given the following standard reduction potentials, determine the Ksp for FeS(s) at 25 degree C 9 Times 10-50 5 Times 10-20 1 Times 10-14 2 Times 10-10. 2 Times 1020 What charge, in coulombs, is required deposit 0.301 g Cu(s) from a solution of Cu2+(aq)? 9.82 Times 10-8 C 3.97 Times 10-4 C 228 C 457 C 914 C Al3+ is reduced to Al(s) at an electrode. If a current of 2.00 ampere is passed for 48 hours, what mass of aluminum is deposited at the electrode? Assume 100% current efficiency 3.58 g 32.2 g 48 3 g 96.6 g 2.90 Times 102 g One kind of battery used in watches contains mercury(II) oxide. As current flows, the mercury oxide is reduced to mercury. If 2.5 Times 10-5 amperes flows continuously 1095 days, what mass of Hg(lambda) is produced? 2.6 Times 10-6 g 1.0 Times 10-5 g 2.8 Times 10-5 g 0.10 g 2.5 g The following processes occur spontaneously at 25 degree C Which of these processes are endothermic? the combustion of methane to produce water and carbon dioxide the expansion of an ideal gas into a vacuum the melting of ice 1 only 2 only 3 only 1 and 2 2 and 3

Explanation / Answer

33. b

34. e

35. b

36. e

37. c

temperature does not change in ideal gas expansion ref: http://goo.gl/ZfnBYP

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