8a and 8b 199A FINAL COMMENTWhen H is present, it must be treated like any other reactant. For example, if you are asked whether theSO +4H +2e H₂SO3 + 2 H₂O50 in a solution of Na₂SO will reduce:+0.17solution is "ACIDIC". In the same way that the reduction doesn't occur if SO is absent, there is no reaction ifyour answer should be "there is no reaction UNLESS H* is present also", or equivalently, that theNote that H* is a necessary reactant in many reduction reactions. However, there is only ONE reaction inwhich H* is the only substance involved in the reduction half-reaction:H* is absent.2 H+2 eH₂(g)0.00.EXERCISES:7. Using the Standard Reduction Potential table, state whether the following species• can only undergo reduction, or• can only undergo oxidation, or• cannot react at all, or• can undergo either reduction or oxidation (because it is found on both sides of the Table).(a) Na*(c) Cut(e) NO3(g) Fe²+(i) Se(s)(k) Al(s)(b) r(d) Sn4+(f) Hg(1)(h) Co²+(1) acidic Cr₂O78. Classify as spontaneous or no reaction.If spontaneous,(1) Sn²+write out the complete reaction.a) Ni²+ + Ag(s)b) Zn²+e) H+ + Fe(s)g) Sn²+ + Co(s) i)c) Ag(s) + 1+Li(s) d) H+ + Cu(s)Al³+ +Ni(s)j) Hg²+ + H₂(g)f) Sn4+.4+ + Au(s)h) Cu* + Sn(s)9. Which member of each of the following pairs is the stronger oxidizing agent?a) Zn²+ or Ca²+b) Cr3+ or Cu²+c) Br₂ or l210. Which member of each of the following pairs is the stronger reducing agent?a) Mn or Pbc) Cr²+ or Fe²+b) Cut or Sn²+11. Predict whether a spontaneous reaction is expected when the following are mixed, and state theproducts of any spontaneous reactions.a) Zn(s) and H₂(g)b) Sn(s) and Sn4+e)Fe²+ is added to acidic Cr₂O7²-c) H is added to Mn(s)f) Cu(s) and H*d) Fe²+is added toCr₂0²g) A mixture of MnO₂(s) and H* is added to Ih) So is added to Sn(s)12. a) Which of Cr, l2, Al and Fe³+ will oxidize Co?b) Which of H2, Cl₂, Hg and H₂O2 will reduce Ag* ?c) Which of I, Pb, Br₂ and Sn²+ will act as reducing agents for Sn4+?d) Which of CultNO and ST will act as oxidizing agents for aqueous SO₂ (i.e. H₂SO3)?nidic so²?

Here we have to predict whether the following given redox reactions are spontaneous or not.

8. Classify as spontaneous or no reaction. If spontaneous, write out the complete reaction. a) Ni²+ + Ag(s) b) Zn²+ c) Ag(s) +¯¯ e) H+ + Fe(s) g) Sn²+ + Co(s) i) h) Cu*+Sn(s) Al³+ +Ni(s) j) Hg²+ +H₂(g) 4+ +Li(s) d) H+ + Cu(s) Sn++Au(s) 9. Which f) gor oxidizing agent?

8. Classify as spontaneous or no reaction. If spontaneous, write out the complete reaction. a) Ni²+ + Ag(s) b) Zn²+ c) Ag(s) +¯¯ e) H+ + Fe(s) g) Sn²+ + Co(s) i) h) Cu*+Sn(s) Al³+ +Ni(s) j) Hg²+ +H₂(g) 4+ +Li(s) d) H+ + Cu(s) Sn++Au(s) 9. Which f) gor oxidizing agent?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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