Question

Section Advance Study Assignment - Chemistry 180 The Activity Series: Redox Reactions 1. Write balanced chemical half-reactions for the oxidation of copper, aluminum, and nickel. 1. Aluminum metal reacts with solutions of nickel(II)ion and copper(II)ion. Copper metal reacts with neither aluminum ion nor nickel(II)ion. Nickel metal only reacts with copper(II)ion. a. When aluminum metal reacts with nickel(II), which is oxidized? Which is reduced? b. When aluminum metal reacts with copper(II)ion, which is oxidized? Which is reduced? c. When nickel metal reacts with copper(II)ion, which is oxidized? Which is reduced? 127 Exp. 11 - Activity Series 127

Answer 1

① Half reaction for oxidation of Copper Cu (424 + 2ė- Half reaction for oxidation of aluminium 34 Al Al Half reaction for oxidation of nickel + 3 Ni Nizt + 2e a will will b Since; in electro che series aluminium iss in the upper side thais mikel. A so, aluminium has higher one Fresco reductions nickel. Hence aluminium i reduced and nickel oxidized, When aluminium reacts with mickel (I) Since in electrochemical series, aluminium is in the upper side than copper. So, aluminium has higher thing power than reductions Copper. will Hence aluminium a reduced and copper oxidized, whein aluminium reacts with copper. © Since, in electrochemical series, nickel is in the side them copper. So, reduction nickel has higher than copper will apper side ng power CS Scanned with CamScanner

whoiditing Hence nickel will reduced and will copper Oxidized when nickel.o reacts with copper, & The eut which has will oxidized other agent element and reduced itself is called Oxidi agent. Here Aluminium is the stron est than nickel is most likely to Here copper is sweakest oxi because it is least likely to be reduced. C: Al3+ + 36 - Al strongest agent copper, because it reduced. e oxidizing agent 2+ Ni tréni weakest oxiditing Cult tré +ze - Cu agent, CS Scanned with CamScanner