2. Which of the following pairs of reactants will result in a spontaneous reaction at 25°C....

2. Which of the following pairs of reactants will result in a spontaneous reaction at 25°C. (select all that are spontaneous)

Pb²⁺(aq) + 2e- → Pb (s) Eºcell= -0.13V

Cu⁺(aq) + e- → Cu (s) Eºcell= +0.52

Ag⁺(aq)+ e- → Ag (s) Eºcell= +0.80

Br₂ (l)+ 2e- → 2 Br- (aq) Eºcell= +1.09

Li⁺(aq) + e- → Li (s) Eºcell= -3.04

Al ³⁺(aq)+ 3e- → Al (s) Eºcell= -1.66

Fe³⁺(aq) + 3e- → Fe (s) Eºcell= -0.036

Ni²⁺(aq) + 2e- → Ni (s) Eºcell= -0.23

A)	Al3+(aq) + Li (s)

B)	Pb2+(aq) + Cu(s)

C)	Ag+(aq) + Br⁻(aq)

D)	Fe3+(aq) + Ni(s)

Order the following in order of increasing reducing agent strength (1=weakest; 4=strongest)

1234

Cu²⁺(aq) + e- → Cu⁺ (s)

Eºcell= +0.16 V

1234

Cr ³⁺(aq)+ 3e- → Cr (s)

Eºcell= -0.73 V

1234

Fe ²⁺(aq)+ 2e- → Fe (s)

Eºcell= -0.45 V

1234

Pb²⁺(aq) + 2e- → Pb (s)

Eºcell= +0.13 V

Solutions

Expert Solution

queen_honey_blossom answered 1 year ago

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