a) Which metal will plate out first? (Circle one)Ag Cu both will plate out togetherb) It takes a current of 0.75 A running for 2.5 hours to plate out all of the metal. A total mass of 3.50 g of metal plated out. What mass of silver (Ag) plated out?mass Ag: gAg+(aq)+ e---> Ag(s)0.80Cu+2(aq)+ 2e---> Cu(s)0.34Eo(V)29
230_W16_PREP_E4_blankp 23EoAg+(aq)+ e---> Ag(s)0.80 VFe+3(aq)+ e---> Fe+2(aq)0.77 V302) Assemble a galvanic cell Pt(s)l Fe+2(aq) ,Fe+3(aq)ll Ag+(aq)l Ag(s)containing 500 mL of solution in each half cell, use the following components: 250 mL of 1.0 M aqueous Fe(NO3)2250 mL of 1.0 M aqueous Fe(NO3)3500 mL of 1.5 M aqueous AgNO3KNO3salt bridgePt and Ag electrodes an external circuita) What is the ΔE of the cell?ΔE = Vb) How will adding water to the iron half cell affect the potential ΔE?ΔE becomes more positiveΔE becomes more negativeΔE stays the same(Circle one answer in each box b-f)c) How will adding water to the silver half cell affect the potential ΔE?ΔE becomes more positiveΔE becomes more negativeΔE stays the sameKspAgCl = 1.8x10-10FeCl2and FeCl3are solubled) How will adding NaCl(s)tothe silver half cell affect the potential ΔE?ΔE becomes more positiveΔE becomes more negativeΔE stays the samee) How will changing the salt bridge to Fe(NO3)2affect the potential ΔE?ΔE becomes more positiveΔE becomes more negativeΔE stays the samef) Which ratio of Fe+3/Fe+2 would maximize the potential of the cell?4:1 2:1 1:1 1:2 1:4g) When the cell reaches equilibrium, what is the value of Q (the reaction quotient)?818Q =
230_W16_PREP_E4_blankp 24332) Balance the following net ionic redox reaction as directed below. Ag(s)+ HS-1(aq)+ CrO4-2(aq)---> Ag2S(s)+ Cr(OH)3(s)a) Write out the balanced reduction half reaction in acidin its simplest form.b) Write out the balanced oxidation half reaction in acid in its simplest form.c) Write out the balanced overall reaction in basein its simplest form.334325) Balance the following net ionic redox reaction in base: Zn(s)+ NO31-(aq)--> Zn(OH)4-2(aq)+ NH3(aq)a) Balanced oxidationhalf reaction: (in acid or base...your choice)b) Balanced reductionhalf reaction: (in acid or base...your choice)c) Balanced overall reactionin base224
230_W16_PREP_E4_blankp 25salt bridgeVCu2+(1 M)Cu2+(0.01 M)Cu (s)Cu (s)b) The 1M Cu2+half cell is the (circle one): anode cathodea) electrons flow (circle one):c) The salt bridge contains KCl. Which ion flows towards the 0.01M Cu2+solution? (circle one) K+Cl-d) What is the value of ΔEo?g) What is the value of ΔE?f) What is the value of ΔGo?e) What is the value of K for the reaction?Both electrodes initially contain 17.8 g of copper and are placed in 100 mL of Cu2+solution. A 1.4 amp current runs through the cell for 10 minutes. After the 10 minutes of current flow,h) what is the mass of the anode?i) what is the [Cu+2] ions at the cathode?