Question

predict whether the following reactions will be spontaneous.Write the balamce net ionic equation for those which ll occur.

a)hydrogen gas plus aqueous silver ion

b)aqueous iodide ion plus aqueous zinc ion

c)aqueous chloride io plus aqueous silver ion

d)aquerous ferrous ion plus permanganate ion (acidic conditions)

Answer 1

Answer:

a) H₂(g) + AgNO₃(aq) Ag(s) + HNO₃(aq)

Net ionic Reaction:

H₂(g) + Ag⁺ Ag(s) + 2H⁺

Spontaneous.

b) Net Ionic reaction:

I₂ + Zn²⁺ Zn + 2I^-

Non spontaneous.

c) Net Ionic reaction:

Cl₂ + Ag⁺ Ag + 2Cl^-

Non spontaneous.

d) Net Ionic reaction:

MnO₄^- + Fe²⁺ + H⁺ Mn²⁺ + Fe³⁺

Non spontaneous.

Note: According to electrochemical series (standard reduction potentials), The above one of the series displaces the below one. Such type of reactions are spontaneous.