Question

If an of the following reactions occurs spontaneously, write the balanced net ionic equation. If not, write no reaction&
a)Pb + Zn2+ -------->Pb2+ + Zn
b)Fe + H+ --------->Fe2+ + H2
c)Cu + Ag+----------->Cu2+ + Ag
d)Cr + Zn2+ ------->Cr3+ + Zn​

Answer 1

Answer:

This question is basically from the chapter "Electrochemistry."

Electrochemistry-  It is a study of chemical process in chemistry which involves the movement of electrons through chemical process.

a)  Pb2+(aq) + Zn(s)  →  Pb(s) + Zn2+(aq)

b) 2 H+(aq) + Fe(s) → H2(g) + Fe2+(aq)

c) C  u + 2Ag+→ Cu2+ + 2 Ag+

d) No reaction.

So , these are the basic reactions which helps us to find the cell potential Ecell and others electrochemistry factors.