Question

Determine whether each redox reaction occurs spontaneously in the forward direction.

a. Ni(s) + Zn2 + (aq) ¡ Ni2 + (aq) + Zn(s)
b. Ni(s) + Pb2 + (aq) ¡ Ni2 + (aq) + Pb(s)
c. Al(s) + 3 Ag+ (aq) ¡ Al3 + (aq) + 3 Ag(s)
d. Pb(s) + Mn2 + (aq) ¡ Pb2 + (aq) + Mn(s)

Answer 1

Step-by-step explanation:

a. Ni(s) + Zn2 + (aq) ¡ Ni2 + (aq) + Zn(s) non spontaneous

b. Ni(s) + Pb2 + (aq) ¡ Ni2 + (aq) + Pb(s) spontaneous

c. Al(s) + 3 Ag+ (aq) ¡ Al3 + (aq) + 3 Ag(s) Reduction spontaneous

d. Pb(s) + Mn2 + (aq) ¡ Pb2 + (aq) + Mn(s) non spontaneous

Answer 2

a) non spontaneous

b) spontaneous

c) spontaneous

d) non spontaneous