Solution Found!
Solution: Predict whether the following reactions would
Chapter 18, Problem 18.16(choose chapter or problem)
Predict whether the following reactions would occur spontaneously in aqueous solution at 25C. Assume that the initial concentrations of dissolved species are all 1.0 M. (a) Ca(s) 1 Cd21(aq) Ca21(aq) 1 Cd(s) (b) 2Br2(aq) 1 Sn21(aq) Br2(l) 1 Sn(s) (c) 2Ag(s) 1 Ni21(aq) 2Ag1(aq) 1 Ni(s) (d) Cu1(aq) 1 Fe31(aq) Cu21(aq) 1 Fe21(aq)
Questions & Answers
QUESTION:
Predict whether the following reactions would occur spontaneously in aqueous solution at 25C. Assume that the initial concentrations of dissolved species are all 1.0 M. (a) Ca(s) 1 Cd21(aq) Ca21(aq) 1 Cd(s) (b) 2Br2(aq) 1 Sn21(aq) Br2(l) 1 Sn(s) (c) 2Ag(s) 1 Ni21(aq) 2Ag1(aq) 1 Ni(s) (d) Cu1(aq) 1 Fe31(aq) Cu21(aq) 1 Fe21(aq)
ANSWER:Step 1 of 3
The standard cell potential and Gibb’s free energy of a reaction are related as
If the standard cell potential is positive, then the sign of delta G will be negative, and the reaction becomes spontaneous.