Part A Identify which redox reactions occur spontaneously in the forwa.docx

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Part A Identify which redox reactions occur spontaneously in the forward direction. Check all that apply. 2Ag (aq) + Ni(s) 2Ag(s)+Ni (aq) O Fe(s) +Mn2 (aq) Fe2 (aq) +Mn(s) O Ca2 (aq) +Zn(s) Ca(s) +Zn2 (aq) 2Al(s) +3Pb2 (aq) 2AP(a) 3Pb(s) SubmitPrey Previous Answers Request Answer Solution Ni(s) ---------------> Ni^2+ (aq) + 2e^- E0 = 0.23v 2Ag^+ (aq) + 2e^- ---------> 2Ag(s) E0 = 0.80v ------------------------------------------------------------------- Ni(s) + 2Ag^+ (aq) ------------> Ni^2+ (aq) + 2Ag(s) E0cell = 1.03v E0cell is positive . so it spontaneous reaction >>>>answewr Fe(s) --------------> Fe^2+ (aq) + 2e^- E0 = 0.41v Mn^2+ (aq) + 2e^- --------> Mn(s) E0 = -1.18v ---------------------------------------------------------------------------- Fe(s) + Mn^2+ (aq) ----------> Fe^2+ (aq) + Mn(s) E0cell = -0.77v E0cell is negative . SO it is not spontaneous Zn(S) -------------> Zn^2+ (aq) + 2e^- E0 = 0.34v Ca^2+ (aq) + 2e^- ------------> Ca(s) E0 = -2.76v ------------------------------------------------------------------------------ Zn(s) + Ca^2+ (aq) ------------> Zn^2+ (aq) + Ca(s) E0cell = -2.42v E0cell is negative . SO it is not spontaneous 2Al(s) ----------------> 2Al^3+ (aq) + 6e^- E0 = 1.66v 3Pb^2+ (aq) + 6e^- ------> 3Pb(s) E0 = -0.13v ----------------------------------------------------------------------------------- 2Al(s) + 3Pb^2+ (aq) -----------> 2Al^3+ (aq) + 3Pb(s) E0cell = 1.53v E0cell is positive . so it spontaneous reaction >>>>answer .

Bildung

2Al(s) ----------------> 2Al^3+ (aq) + 6e^- E0 = 1.66v
3Pb^2+ (aq) + 6e^- ------> 3Pb(s) E0 = -0.13v
-----------------------------------------------------------------------------------
2Al(s) + 3Pb^2+ (aq) -----------> 2Al^3+ (aq) + 3Pb(s) E0cell = 1.53v
E0cell is positive . so it spontaneous reaction >>>>answer

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