please note I only need Cu2+ in scientific notation...(The last part of the ques

Question

please note I only need Cu2+ in scientific notation...(The last part of the question)

A voltaic cell has one half-cell with a Cu bar in a 1.00 M Cu2+ salt and the other half-cell with a Cd bar in the same volume of a 1.00 M Cd2+ salt. Report your answers to the correct number of significant figures.

a)Find E degree cell,

delta G degree ,

and K.

b)As the cell operates (Cd2+) increases;

Find E cell when (Cd2+) is 1.95M

c)Find E cell, Delta G, and (Cu2+) at equilibrium.

Note:            Delta G in Joules   and   

                   (Cu2+)   ........in scientific notation                                      thank you

Explanation / Answer

Ecell =Ecathode- Eanode

Ecathode =0.34 (Cu2+ + 2e- ---------- Cu(S)

E anode = - 0.40 (Cd2+ + 2 e- ------------ Cd (S)

               =     0.34 - (-0.40) = 0.74

Delta G   =   - nFE

                      where n = number of e- transfered = 2e-

                                 F = Faraday's Constant = 9.6485 x 104 J/V

                                 G = 14.28 X 104 J

         Cd(S) / Cd2+ (1 M)(aq) // Cu2+ (1M)(aq) / Cu(S)

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.